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Finding the Fourth Proportional to 391,001.94, 539,640.36 and 247,775.04

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Solution

The fourth proportional to 391,001.94, 539,640.36 and 247,775.04 is: 341,966.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,001.94 : 539,640.36 = 247,775.04 : x
  2. Step 2: Convert to fraction form
    391,001.94/539,640.36 = 247,775.04/x
  3. Step 3: Cross multiply
    391,001.94x = 539,640.36 × 247,775.04
  4. Step 4: Simplify right side
    391,001.94x = 133,709,411,784.61
  5. Step 5: Solve for x
    x = 133,709,411,784.61/391,001.94
  6. Step 6: Final answer
    x = 341,966.11

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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.