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Finding the Fourth Proportional to 406,084.68, 609,265.44 and 121,782.17

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Solution

The fourth proportional to 406,084.68, 609,265.44 and 121,782.17 is: 182,714.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,084.68 : 609,265.44 = 121,782.17 : x
  2. Step 2: Convert to fraction form
    406,084.68/609,265.44 = 121,782.17/x
  3. Step 3: Cross multiply
    406,084.68x = 609,265.44 × 121,782.17
  4. Step 4: Simplify right side
    406,084.68x = 74,197,668,912.37
  5. Step 5: Solve for x
    x = 74,197,668,912.37/406,084.68
  6. Step 6: Final answer
    x = 182,714.77

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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.