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Finding the Fourth Proportional to 402,672.33, 555,231.28 and 257,286.04

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Solution

The fourth proportional to 402,672.33, 555,231.28 and 257,286.04 is: 354,763.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,672.33 : 555,231.28 = 257,286.04 : x
  2. Step 2: Convert to fraction form
    402,672.33/555,231.28 = 257,286.04/x
  3. Step 3: Cross multiply
    402,672.33x = 555,231.28 × 257,286.04
  4. Step 4: Simplify right side
    402,672.33x = 142,853,253,252.75
  5. Step 5: Solve for x
    x = 142,853,253,252.75/402,672.33
  6. Step 6: Final answer
    x = 354,763.02

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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.