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Finding the Fourth Proportional to 307,658.64, 424,761.12 and 235,900.80

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Solution

The fourth proportional to 307,658.64, 424,761.12 and 235,900.80 is: 325,690.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,658.64 : 424,761.12 = 235,900.80 : x
  2. Step 2: Convert to fraction form
    307,658.64/424,761.12 = 235,900.80/x
  3. Step 3: Cross multiply
    307,658.64x = 424,761.12 × 235,900.80
  4. Step 4: Simplify right side
    307,658.64x = 100,201,488,016.90
  5. Step 5: Solve for x
    x = 100,201,488,016.90/307,658.64
  6. Step 6: Final answer
    x = 325,690.47

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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.