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Finding the Fourth Proportional to 251,115.30, 376,672.95 and 156,636.90

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Solution

The fourth proportional to 251,115.30, 376,672.95 and 156,636.90 is: 234,955.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,115.30 : 376,672.95 = 156,636.90 : x
  2. Step 2: Convert to fraction form
    251,115.30/376,672.95 = 156,636.90/x
  3. Step 3: Cross multiply
    251,115.30x = 376,672.95 × 156,636.90
  4. Step 4: Simplify right side
    251,115.30x = 59,000,883,201.86
  5. Step 5: Solve for x
    x = 59,000,883,201.86/251,115.30
  6. Step 6: Final answer
    x = 234,955.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.