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Finding the Fourth Proportional to 372,451.80, 558,677.70 and 135,964.20

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Solution

The fourth proportional to 372,451.80, 558,677.70 and 135,964.20 is: 203,946.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,451.80 : 558,677.70 = 135,964.20 : x
  2. Step 2: Convert to fraction form
    372,451.80/558,677.70 = 135,964.20/x
  3. Step 3: Cross multiply
    372,451.80x = 558,677.70 × 135,964.20
  4. Step 4: Simplify right side
    372,451.80x = 75,960,166,538.34
  5. Step 5: Solve for x
    x = 75,960,166,538.34/372,451.80
  6. Step 6: Final answer
    x = 203,946.30

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Double scale
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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.