Home / 426,126.46-639,433.90-173,360.29

Finding the Fourth Proportional to 426,126.46, 639,433.90 and 173,360.29

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Solution

The fourth proportional to 426,126.46, 639,433.90 and 173,360.29 is: 260,139.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,126.46 : 639,433.90 = 173,360.29 : x
  2. Step 2: Convert to fraction form
    426,126.46/639,433.90 = 173,360.29/x
  3. Step 3: Cross multiply
    426,126.46x = 639,433.90 × 173,360.29
  4. Step 4: Simplify right side
    426,126.46x = 110,852,442,709.26
  5. Step 5: Solve for x
    x = 110,852,442,709.26/426,126.46
  6. Step 6: Final answer
    x = 260,139.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.