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Finding the Fourth Proportional to 256,084.70, 384,127.05 and 89,851.10

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Solution

The fourth proportional to 256,084.70, 384,127.05 and 89,851.10 is: 134,776.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,084.70 : 384,127.05 = 89,851.10 : x
  2. Step 2: Convert to fraction form
    256,084.70/384,127.05 = 89,851.10/x
  3. Step 3: Cross multiply
    256,084.70x = 384,127.05 × 89,851.10
  4. Step 4: Simplify right side
    256,084.70x = 34,514,237,982.26
  5. Step 5: Solve for x
    x = 34,514,237,982.26/256,084.70
  6. Step 6: Final answer
    x = 134,776.65

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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.