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Finding the Fourth Proportional to 288,963.72, 433,371 and 86,519.88

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Solution

The fourth proportional to 288,963.72, 433,371 and 86,519.88 is: 129,757.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,963.72 : 433,371 = 86,519.88 : x
  2. Step 2: Convert to fraction form
    288,963.72/433,371 = 86,519.88/x
  3. Step 3: Cross multiply
    288,963.72x = 433,371 × 86,519.88
  4. Step 4: Simplify right side
    288,963.72x = 37,495,206,915.48
  5. Step 5: Solve for x
    x = 37,495,206,915.48/288,963.72
  6. Step 6: Final answer
    x = 129,757.49

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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.