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Finding the Fourth Proportional to 318,090.85, 438,966.28 and 182,126.88

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Solution

The fourth proportional to 318,090.85, 438,966.28 and 182,126.88 is: 251,335.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,090.85 : 438,966.28 = 182,126.88 : x
  2. Step 2: Convert to fraction form
    318,090.85/438,966.28 = 182,126.88/x
  3. Step 3: Cross multiply
    318,090.85x = 438,966.28 × 182,126.88
  4. Step 4: Simplify right side
    318,090.85x = 79,947,559,001.61
  5. Step 5: Solve for x
    x = 79,947,559,001.61/318,090.85
  6. Step 6: Final answer
    x = 251,335.61

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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.