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Finding the Fourth Proportional to 251,377.64, 346,915.16 and 138,223.88

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Solution

The fourth proportional to 251,377.64, 346,915.16 and 138,223.88 is: 190,756.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,377.64 : 346,915.16 = 138,223.88 : x
  2. Step 2: Convert to fraction form
    251,377.64/346,915.16 = 138,223.88/x
  3. Step 3: Cross multiply
    251,377.64x = 346,915.16 × 138,223.88
  4. Step 4: Simplify right side
    251,377.64x = 47,951,959,446.02
  5. Step 5: Solve for x
    x = 47,951,959,446.02/251,377.64
  6. Step 6: Final answer
    x = 190,756.66

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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.