Home / 256,943.18-385,319-88,416.38

Finding the Fourth Proportional to 256,943.18, 385,319 and 88,416.38

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Solution

The fourth proportional to 256,943.18, 385,319 and 88,416.38 is: 132,591.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,943.18 : 385,319 = 88,416.38 : x
  2. Step 2: Convert to fraction form
    256,943.18/385,319 = 88,416.38/x
  3. Step 3: Cross multiply
    256,943.18x = 385,319 × 88,416.38
  4. Step 4: Simplify right side
    256,943.18x = 34,068,511,125.22
  5. Step 5: Solve for x
    x = 34,068,511,125.22/256,943.18
  6. Step 6: Final answer
    x = 132,591.61

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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.