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Finding the Fourth Proportional to 462,400.25, 693,600.38 and 129,976.25

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Solution

The fourth proportional to 462,400.25, 693,600.38 and 129,976.25 is: 194,964.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,400.25 : 693,600.38 = 129,976.25 : x
  2. Step 2: Convert to fraction form
    462,400.25/693,600.38 = 129,976.25/x
  3. Step 3: Cross multiply
    462,400.25x = 693,600.38 × 129,976.25
  4. Step 4: Simplify right side
    462,400.25x = 90,151,575,741.09
  5. Step 5: Solve for x
    x = 90,151,575,741.09/462,400.25
  6. Step 6: Final answer
    x = 194,964.38

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Similar ratio
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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.