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Finding the Fourth Proportional to 406,122.40, 609,241.20 and 125,610.40

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Solution

The fourth proportional to 406,122.40, 609,241.20 and 125,610.40 is: 188,433.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,122.40 : 609,241.20 = 125,610.40 : x
  2. Step 2: Convert to fraction form
    406,122.40/609,241.20 = 125,610.40/x
  3. Step 3: Cross multiply
    406,122.40x = 609,241.20 × 125,610.40
  4. Step 4: Simplify right side
    406,122.40x = 76,527,030,828.48
  5. Step 5: Solve for x
    x = 76,527,030,828.48/406,122.40
  6. Step 6: Final answer
    x = 188,433.42

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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.