Home / 289,064,840,490.88-398,920,245,569.40-173,340,441,189.70

Finding the Fourth Proportional to 289,064,840,490.88, 398,920,245,569.40 and 173,340,441,189.70

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Solution

The fourth proportional to 289,064,840,490.88, 398,920,245,569.40 and 173,340,441,189.70 is: 239,216,264,589.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,064,840,490.88 : 398,920,245,569.40 = 173,340,441,189.70 : x
  2. Step 2: Convert to fraction form
    289,064,840,490.88/398,920,245,569.40 = 173,340,441,189.70/x
  3. Step 3: Cross multiply
    289,064,840,490.88x = 398,920,245,569.40 × 173,340,441,189.70
  4. Step 4: Simplify right side
    289,064,840,490.88x = 69,149,011,366,503,268,745,216
  5. Step 5: Solve for x
    x = 69,149,011,366,503,268,745,216/289,064,840,490.88
  6. Step 6: Final answer
    x = 239,216,264,589.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.