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Finding the Fourth Proportional to 256,845.66, 385,268.48 and 88,370.11

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Solution

The fourth proportional to 256,845.66, 385,268.48 and 88,370.11 is: 132,555.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,845.66 : 385,268.48 = 88,370.11 : x
  2. Step 2: Convert to fraction form
    256,845.66/385,268.48 = 88,370.11/x
  3. Step 3: Cross multiply
    256,845.66x = 385,268.48 × 88,370.11
  4. Step 4: Simplify right side
    256,845.66x = 34,046,217,957.13
  5. Step 5: Solve for x
    x = 34,046,217,957.13/256,845.66
  6. Step 6: Final answer
    x = 132,555.16

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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.