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Finding the Fourth Proportional to 412,387.83, 618,581.30 and 112,870.89

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Solution

The fourth proportional to 412,387.83, 618,581.30 and 112,870.89 is: 169,306.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,387.83 : 618,581.30 = 112,870.89 : x
  2. Step 2: Convert to fraction form
    412,387.83/618,581.30 = 112,870.89/x
  3. Step 3: Cross multiply
    412,387.83x = 618,581.30 × 112,870.89
  4. Step 4: Simplify right side
    412,387.83x = 69,819,821,304.00
  5. Step 5: Solve for x
    x = 69,819,821,304.00/412,387.83
  6. Step 6: Final answer
    x = 169,306.21

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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.