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Finding the Fourth Proportional to 302,532.80, 453,801.80 and 86,390.97

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Solution

The fourth proportional to 302,532.80, 453,801.80 and 86,390.97 is: 129,587.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,532.80 : 453,801.80 = 86,390.97 : x
  2. Step 2: Convert to fraction form
    302,532.80/453,801.80 = 86,390.97/x
  3. Step 3: Cross multiply
    302,532.80x = 453,801.80 × 86,390.97
  4. Step 4: Simplify right side
    302,532.80x = 39,204,377,257.79
  5. Step 5: Solve for x
    x = 39,204,377,257.79/302,532.80
  6. Step 6: Final answer
    x = 129,587.20

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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.