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Finding the Fourth Proportional to 288,008.30, 431,256.45 and 203,311.10

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Solution

The fourth proportional to 288,008.30, 431,256.45 and 203,311.10 is: 304,432.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,008.30 : 431,256.45 = 203,311.10 : x
  2. Step 2: Convert to fraction form
    288,008.30/431,256.45 = 203,311.10/x
  3. Step 3: Cross multiply
    288,008.30x = 431,256.45 × 203,311.10
  4. Step 4: Simplify right side
    288,008.30x = 87,679,223,231.60
  5. Step 5: Solve for x
    x = 87,679,223,231.60/288,008.30
  6. Step 6: Final answer
    x = 304,432.97

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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.