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Finding the Fourth Proportional to 256,850.91, 354,373.92 and 154,907.55

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Solution

The fourth proportional to 256,850.91, 354,373.92 and 154,907.55 is: 213,723.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,850.91 : 354,373.92 = 154,907.55 : x
  2. Step 2: Convert to fraction form
    256,850.91/354,373.92 = 154,907.55/x
  3. Step 3: Cross multiply
    256,850.91x = 354,373.92 × 154,907.55
  4. Step 4: Simplify right side
    256,850.91x = 54,895,195,731.10
  5. Step 5: Solve for x
    x = 54,895,195,731.10/256,850.91
  6. Step 6: Final answer
    x = 213,723.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.