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Finding the Fourth Proportional to 381,420.32, 572,000.88 and 132,044

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Solution

The fourth proportional to 381,420.32, 572,000.88 and 132,044 is: 198,021.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,420.32 : 572,000.88 = 132,044 : x
  2. Step 2: Convert to fraction form
    381,420.32/572,000.88 = 132,044/x
  3. Step 3: Cross multiply
    381,420.32x = 572,000.88 × 132,044
  4. Step 4: Simplify right side
    381,420.32x = 75,529,284,198.72
  5. Step 5: Solve for x
    x = 75,529,284,198.72/381,420.32
  6. Step 6: Final answer
    x = 198,021.13

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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.