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Finding the Fourth Proportional to 478,366.08, 660,148.56 and 274,425.90

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Solution

The fourth proportional to 478,366.08, 660,148.56 and 274,425.90 is: 378,709.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,366.08 : 660,148.56 = 274,425.90 : x
  2. Step 2: Convert to fraction form
    478,366.08/660,148.56 = 274,425.90/x
  3. Step 3: Cross multiply
    478,366.08x = 660,148.56 × 274,425.90
  4. Step 4: Simplify right side
    478,366.08x = 181,161,862,711.70
  5. Step 5: Solve for x
    x = 181,161,862,711.70/478,366.08
  6. Step 6: Final answer
    x = 378,709.68

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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.