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Finding the Fourth Proportional to 615,331.71, 849,171.36 and 339,688.92

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Solution

The fourth proportional to 615,331.71, 849,171.36 and 339,688.92 is: 468,778.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,331.71 : 849,171.36 = 339,688.92 : x
  2. Step 2: Convert to fraction form
    615,331.71/849,171.36 = 339,688.92/x
  3. Step 3: Cross multiply
    615,331.71x = 849,171.36 × 339,688.92
  4. Step 4: Simplify right side
    615,331.71x = 288,454,102,173.33
  5. Step 5: Solve for x
    x = 288,454,102,173.33/615,331.71
  6. Step 6: Final answer
    x = 468,778.22

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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.