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Finding the Fourth Proportional to 307,177.80, 424,167.21 and 192,649.20

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Solution

The fourth proportional to 307,177.80, 424,167.21 and 192,649.20 is: 266,020.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,177.80 : 424,167.21 = 192,649.20 : x
  2. Step 2: Convert to fraction form
    307,177.80/424,167.21 = 192,649.20/x
  3. Step 3: Cross multiply
    307,177.80x = 424,167.21 × 192,649.20
  4. Step 4: Simplify right side
    307,177.80x = 81,715,473,672.73
  5. Step 5: Solve for x
    x = 81,715,473,672.73/307,177.80
  6. Step 6: Final answer
    x = 266,020.11

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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.