Home / 414,008.20-621,012.30-129,701.13

Finding the Fourth Proportional to 414,008.20, 621,012.30 and 129,701.13

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Solution

The fourth proportional to 414,008.20, 621,012.30 and 129,701.13 is: 194,551.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,008.20 : 621,012.30 = 129,701.13 : x
  2. Step 2: Convert to fraction form
    414,008.20/621,012.30 = 129,701.13/x
  3. Step 3: Cross multiply
    414,008.20x = 621,012.30 × 129,701.13
  4. Step 4: Simplify right side
    414,008.20x = 80,545,997,053.90
  5. Step 5: Solve for x
    x = 80,545,997,053.90/414,008.20
  6. Step 6: Final answer
    x = 194,551.70

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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.