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Finding the Fourth Proportional to 521,195.52, 719,251.20 and 282,731.52

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Solution

The fourth proportional to 521,195.52, 719,251.20 and 282,731.52 is: 390,170.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,195.52 : 719,251.20 = 282,731.52 : x
  2. Step 2: Convert to fraction form
    521,195.52/719,251.20 = 282,731.52/x
  3. Step 3: Cross multiply
    521,195.52x = 719,251.20 × 282,731.52
  4. Step 4: Simplify right side
    521,195.52x = 203,354,985,037.82
  5. Step 5: Solve for x
    x = 203,354,985,037.82/521,195.52
  6. Step 6: Final answer
    x = 390,170.25

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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.