Home / 392,309.10-541,247.34-256,421.52

Finding the Fourth Proportional to 392,309.10, 541,247.34 and 256,421.52

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Solution

The fourth proportional to 392,309.10, 541,247.34 and 256,421.52 is: 353,770.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,309.10 : 541,247.34 = 256,421.52 : x
  2. Step 2: Convert to fraction form
    392,309.10/541,247.34 = 256,421.52/x
  3. Step 3: Cross multiply
    392,309.10x = 541,247.34 × 256,421.52
  4. Step 4: Simplify right side
    392,309.10x = 138,787,465,618.76
  5. Step 5: Solve for x
    x = 138,787,465,618.76/392,309.10
  6. Step 6: Final answer
    x = 353,770.70

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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.