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Finding the Fourth Proportional to 538,756.50, 808,442.91 and 272,538.66

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Solution

The fourth proportional to 538,756.50, 808,442.91 and 272,538.66 is: 408,963.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,756.50 : 808,442.91 = 272,538.66 : x
  2. Step 2: Convert to fraction form
    538,756.50/808,442.91 = 272,538.66/x
  3. Step 3: Cross multiply
    538,756.50x = 808,442.91 × 272,538.66
  4. Step 4: Simplify right side
    538,756.50x = 220,331,947,377.90
  5. Step 5: Solve for x
    x = 220,331,947,377.90/538,756.50
  6. Step 6: Final answer
    x = 408,963.88

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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.