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Finding the Fourth Proportional to 381,331.99, 572,148.65 and 144,737.47

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Solution

The fourth proportional to 381,331.99, 572,148.65 and 144,737.47 is: 217,163.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,331.99 : 572,148.65 = 144,737.47 : x
  2. Step 2: Convert to fraction form
    381,331.99/572,148.65 = 144,737.47/x
  3. Step 3: Cross multiply
    381,331.99x = 572,148.65 × 144,737.47
  4. Step 4: Simplify right side
    381,331.99x = 82,811,348,064.92
  5. Step 5: Solve for x
    x = 82,811,348,064.92/381,331.99
  6. Step 6: Final answer
    x = 217,163.39

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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.