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Finding the Fourth Proportional to 351,606.56, 527,077.65 and 319,387.95

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Solution

The fourth proportional to 351,606.56, 527,077.65 and 319,387.95 is: 478,780.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,606.56 : 527,077.65 = 319,387.95 : x
  2. Step 2: Convert to fraction form
    351,606.56/527,077.65 = 319,387.95/x
  3. Step 3: Cross multiply
    351,606.56x = 527,077.65 × 319,387.95
  4. Step 4: Simplify right side
    351,606.56x = 168,342,250,124.32
  5. Step 5: Solve for x
    x = 168,342,250,124.32/351,606.56
  6. Step 6: Final answer
    x = 478,780.17

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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.