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Finding the Fourth Proportional to 392,312.10, 541,251.48 and 256,424.52

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Solution

The fourth proportional to 392,312.10, 541,251.48 and 256,424.52 is: 353,774.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,312.10 : 541,251.48 = 256,424.52 : x
  2. Step 2: Convert to fraction form
    392,312.10/541,251.48 = 256,424.52/x
  3. Step 3: Cross multiply
    392,312.10x = 541,251.48 × 256,424.52
  4. Step 4: Simplify right side
    392,312.10x = 138,790,150,958.29
  5. Step 5: Solve for x
    x = 138,790,150,958.29/392,312.10
  6. Step 6: Final answer
    x = 353,774.84

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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.