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Finding the Fourth Proportional to 445,142.34, 615,134.70 and 337,512.78

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Solution

The fourth proportional to 445,142.34, 615,134.70 and 337,512.78 is: 466,403.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,142.34 : 615,134.70 = 337,512.78 : x
  2. Step 2: Convert to fraction form
    445,142.34/615,134.70 = 337,512.78/x
  3. Step 3: Cross multiply
    445,142.34x = 615,134.70 × 337,512.78
  4. Step 4: Simplify right side
    445,142.34x = 207,615,822,671.47
  5. Step 5: Solve for x
    x = 207,615,822,671.47/445,142.34
  6. Step 6: Final answer
    x = 466,403.22

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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.