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Finding the Fourth Proportional to 256,706.10, 385,022.70 and 88,234.20

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Solution

The fourth proportional to 256,706.10, 385,022.70 and 88,234.20 is: 132,338.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,706.10 : 385,022.70 = 88,234.20 : x
  2. Step 2: Convert to fraction form
    256,706.10/385,022.70 = 88,234.20/x
  3. Step 3: Cross multiply
    256,706.10x = 385,022.70 × 88,234.20
  4. Step 4: Simplify right side
    256,706.10x = 33,972,169,916.34
  5. Step 5: Solve for x
    x = 33,972,169,916.34/256,706.10
  6. Step 6: Final answer
    x = 132,338.77

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1.5x scale

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.