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Finding the Fourth Proportional to 381,419.47, 572,110.70 and 141,580.11

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Solution

The fourth proportional to 381,419.47, 572,110.70 and 141,580.11 is: 212,363.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,419.47 : 572,110.70 = 141,580.11 : x
  2. Step 2: Convert to fraction form
    381,419.47/572,110.70 = 141,580.11/x
  3. Step 3: Cross multiply
    381,419.47x = 572,110.70 × 141,580.11
  4. Step 4: Simplify right side
    381,419.47x = 80,999,495,130.28
  5. Step 5: Solve for x
    x = 80,999,495,130.28/381,419.47
  6. Step 6: Final answer
    x = 212,363.30

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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.