Home / 389,448.45-537,442.97-217,382.85

Finding the Fourth Proportional to 389,448.45, 537,442.97 and 217,382.85

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Solution

The fourth proportional to 389,448.45, 537,442.97 and 217,382.85 is: 299,990.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,448.45 : 537,442.97 = 217,382.85 : x
  2. Step 2: Convert to fraction form
    389,448.45/537,442.97 = 217,382.85/x
  3. Step 3: Cross multiply
    389,448.45x = 537,442.97 × 217,382.85
  4. Step 4: Simplify right side
    389,448.45x = 116,830,883,444.15
  5. Step 5: Solve for x
    x = 116,830,883,444.15/389,448.45
  6. Step 6: Final answer
    x = 299,990.62

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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.