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Finding the Fourth Proportional to 308,209.80, 462,314.70 and 86,593.80

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Solution

The fourth proportional to 308,209.80, 462,314.70 and 86,593.80 is: 129,890.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,209.80 : 462,314.70 = 86,593.80 : x
  2. Step 2: Convert to fraction form
    308,209.80/462,314.70 = 86,593.80/x
  3. Step 3: Cross multiply
    308,209.80x = 462,314.70 × 86,593.80
  4. Step 4: Simplify right side
    308,209.80x = 40,033,586,668.86
  5. Step 5: Solve for x
    x = 40,033,586,668.86/308,209.80
  6. Step 6: Final answer
    x = 129,890.70

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1.5x scale

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.