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Finding the Fourth Proportional to 442,699.21, 610,863.29 and 251,691.49

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Solution

The fourth proportional to 442,699.21, 610,863.29 and 251,691.49 is: 347,299.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,699.21 : 610,863.29 = 251,691.49 : x
  2. Step 2: Convert to fraction form
    442,699.21/610,863.29 = 251,691.49/x
  3. Step 3: Cross multiply
    442,699.21x = 610,863.29 × 251,691.49
  4. Step 4: Simplify right side
    442,699.21x = 153,749,090,387.95
  5. Step 5: Solve for x
    x = 153,749,090,387.95/442,699.21
  6. Step 6: Final answer
    x = 347,299.22

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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.