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Finding the Fourth Proportional to 406,505.52, 609,758.28 and 169,719.30

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Solution

The fourth proportional to 406,505.52, 609,758.28 and 169,719.30 is: 254,578.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,505.52 : 609,758.28 = 169,719.30 : x
  2. Step 2: Convert to fraction form
    406,505.52/609,758.28 = 169,719.30/x
  3. Step 3: Cross multiply
    406,505.52x = 609,758.28 × 169,719.30
  4. Step 4: Simplify right side
    406,505.52x = 103,487,748,450.80
  5. Step 5: Solve for x
    x = 103,487,748,450.80/406,505.52
  6. Step 6: Final answer
    x = 254,578.95

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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.