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Finding the Fourth Proportional to 251,337.96, 346,837.59 and 138,159.90

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Solution

The fourth proportional to 251,337.96, 346,837.59 and 138,159.90 is: 190,655.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,337.96 : 346,837.59 = 138,159.90 : x
  2. Step 2: Convert to fraction form
    251,337.96/346,837.59 = 138,159.90/x
  3. Step 3: Cross multiply
    251,337.96x = 346,837.59 × 138,159.90
  4. Step 4: Simplify right side
    251,337.96x = 47,919,046,750.64
  5. Step 5: Solve for x
    x = 47,919,046,750.64/251,337.96
  6. Step 6: Final answer
    x = 190,655.83

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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.