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Finding the Fourth Proportional to 447,674.72, 671,737.20 and 279,151.52

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Solution

The fourth proportional to 447,674.72, 671,737.20 and 279,151.52 is: 418,867.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,674.72 : 671,737.20 = 279,151.52 : x
  2. Step 2: Convert to fraction form
    447,674.72/671,737.20 = 279,151.52/x
  3. Step 3: Cross multiply
    447,674.72x = 671,737.20 × 279,151.52
  4. Step 4: Simplify right side
    447,674.72x = 187,516,460,420.54
  5. Step 5: Solve for x
    x = 187,516,460,420.54/447,674.72
  6. Step 6: Final answer
    x = 418,867.66

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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.