Home / 309,926.97-465,069.95-129,996.40

Finding the Fourth Proportional to 309,926.97, 465,069.95 and 129,996.40

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Solution

The fourth proportional to 309,926.97, 465,069.95 and 129,996.40 is: 195,069.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,926.97 : 465,069.95 = 129,996.40 : x
  2. Step 2: Convert to fraction form
    309,926.97/465,069.95 = 129,996.40/x
  3. Step 3: Cross multiply
    309,926.97x = 465,069.95 × 129,996.40
  4. Step 4: Simplify right side
    309,926.97x = 60,457,419,248.18
  5. Step 5: Solve for x
    x = 60,457,419,248.18/309,926.97
  6. Step 6: Final answer
    x = 195,069.89

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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.