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Finding the Fourth Proportional to 256,746.19, 385,024.98 and 88,218.71

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Solution

The fourth proportional to 256,746.19, 385,024.98 and 88,218.71 is: 132,295.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,746.19 : 385,024.98 = 88,218.71 : x
  2. Step 2: Convert to fraction form
    256,746.19/385,024.98 = 88,218.71/x
  3. Step 3: Cross multiply
    256,746.19x = 385,024.98 × 88,218.71
  4. Step 4: Simplify right side
    256,746.19x = 33,966,407,053.38
  5. Step 5: Solve for x
    x = 33,966,407,053.38/256,746.19
  6. Step 6: Final answer
    x = 132,295.66

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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.