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Finding the Fourth Proportional to 406,752.39, 609,931.73 and 140,419.53

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Solution

The fourth proportional to 406,752.39, 609,931.73 and 140,419.53 is: 210,561.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,752.39 : 609,931.73 = 140,419.53 : x
  2. Step 2: Convert to fraction form
    406,752.39/609,931.73 = 140,419.53/x
  3. Step 3: Cross multiply
    406,752.39x = 609,931.73 × 140,419.53
  4. Step 4: Simplify right side
    406,752.39x = 85,646,326,156.59
  5. Step 5: Solve for x
    x = 85,646,326,156.59/406,752.39
  6. Step 6: Final answer
    x = 210,561.33

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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.