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Finding the Fourth Proportional to 406,766, 561,337.24 and 247,790

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Solution

The fourth proportional to 406,766, 561,337.24 and 247,790 is: 341,950.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,766 : 561,337.24 = 247,790 : x
  2. Step 2: Convert to fraction form
    406,766/561,337.24 = 247,790/x
  3. Step 3: Cross multiply
    406,766x = 561,337.24 × 247,790
  4. Step 4: Simplify right side
    406,766x = 139,093,754,699.60
  5. Step 5: Solve for x
    x = 139,093,754,699.60/406,766
  6. Step 6: Final answer
    x = 341,950.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.