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Finding the Fourth Proportional to 307,514.88, 461,291.76 and 129,988.80

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Solution

The fourth proportional to 307,514.88, 461,291.76 and 129,988.80 is: 194,991.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,514.88 : 461,291.76 = 129,988.80 : x
  2. Step 2: Convert to fraction form
    307,514.88/461,291.76 = 129,988.80/x
  3. Step 3: Cross multiply
    307,514.88x = 461,291.76 × 129,988.80
  4. Step 4: Simplify right side
    307,514.88x = 59,962,762,332.29
  5. Step 5: Solve for x
    x = 59,962,762,332.29/307,514.88
  6. Step 6: Final answer
    x = 194,991.42

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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.