Home / 251,456.15-347,002.62-138,278.90

Finding the Fourth Proportional to 251,456.15, 347,002.62 and 138,278.90

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Solution

The fourth proportional to 251,456.15, 347,002.62 and 138,278.90 is: 190,821.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,456.15 : 347,002.62 = 138,278.90 : x
  2. Step 2: Convert to fraction form
    251,456.15/347,002.62 = 138,278.90/x
  3. Step 3: Cross multiply
    251,456.15x = 347,002.62 × 138,278.90
  4. Step 4: Simplify right side
    251,456.15x = 47,983,138,855.70
  5. Step 5: Solve for x
    x = 47,983,138,855.70/251,456.15
  6. Step 6: Final answer
    x = 190,821.10

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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.