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Finding the Fourth Proportional to 256,598.10, 384,860.70 and 88,126.20

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Solution

The fourth proportional to 256,598.10, 384,860.70 and 88,126.20 is: 132,176.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,598.10 : 384,860.70 = 88,126.20 : x
  2. Step 2: Convert to fraction form
    256,598.10/384,860.70 = 88,126.20/x
  3. Step 3: Cross multiply
    256,598.10x = 384,860.70 × 88,126.20
  4. Step 4: Simplify right side
    256,598.10x = 33,916,311,020.34
  5. Step 5: Solve for x
    x = 33,916,311,020.34/256,598.10
  6. Step 6: Final answer
    x = 132,176.78

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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.