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Finding the Fourth Proportional to 251,148.80, 376,488.96 and 84,820.48

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Solution

The fourth proportional to 251,148.80, 376,488.96 and 84,820.48 is: 127,151.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,148.80 : 376,488.96 = 84,820.48 : x
  2. Step 2: Convert to fraction form
    251,148.80/376,488.96 = 84,820.48/x
  3. Step 3: Cross multiply
    251,148.80x = 376,488.96 × 84,820.48
  4. Step 4: Simplify right side
    251,148.80x = 31,933,974,301.90
  5. Step 5: Solve for x
    x = 31,933,974,301.90/251,148.80
  6. Step 6: Final answer
    x = 127,151.61

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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.