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Finding the Fourth Proportional to 302,532.30, 453,801.05 and 86,390.47

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Solution

The fourth proportional to 302,532.30, 453,801.05 and 86,390.47 is: 129,586.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,532.30 : 453,801.05 = 86,390.47 : x
  2. Step 2: Convert to fraction form
    302,532.30/453,801.05 = 86,390.47/x
  3. Step 3: Cross multiply
    302,532.30x = 453,801.05 × 86,390.47
  4. Step 4: Simplify right side
    302,532.30x = 39,204,085,995.99
  5. Step 5: Solve for x
    x = 39,204,085,995.99/302,532.30
  6. Step 6: Final answer
    x = 129,586.45

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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.