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Finding the Fourth Proportional to 309,966.88, 465,154.80 and 112,974.88

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Solution

The fourth proportional to 309,966.88, 465,154.80 and 112,974.88 is: 169,536.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,966.88 : 465,154.80 = 112,974.88 : x
  2. Step 2: Convert to fraction form
    309,966.88/465,154.80 = 112,974.88/x
  3. Step 3: Cross multiply
    309,966.88x = 465,154.80 × 112,974.88
  4. Step 4: Simplify right side
    309,966.88x = 52,550,807,711.42
  5. Step 5: Solve for x
    x = 52,550,807,711.42/309,966.88
  6. Step 6: Final answer
    x = 169,536.85

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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.