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Finding the Fourth Proportional to 406,126.40, 609,247.20 and 125,614.40

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Solution

The fourth proportional to 406,126.40, 609,247.20 and 125,614.40 is: 188,439.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,126.40 : 609,247.20 = 125,614.40 : x
  2. Step 2: Convert to fraction form
    406,126.40/609,247.20 = 125,614.40/x
  3. Step 3: Cross multiply
    406,126.40x = 609,247.20 × 125,614.40
  4. Step 4: Simplify right side
    406,126.40x = 76,530,221,479.68
  5. Step 5: Solve for x
    x = 76,530,221,479.68/406,126.40
  6. Step 6: Final answer
    x = 188,439.42

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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.