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Finding the Fourth Proportional to 439,579.62, 659,422.80 and 124,036.56

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Solution

The fourth proportional to 439,579.62, 659,422.80 and 124,036.56 is: 186,069.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,579.62 : 659,422.80 = 124,036.56 : x
  2. Step 2: Convert to fraction form
    439,579.62/659,422.80 = 124,036.56/x
  3. Step 3: Cross multiply
    439,579.62x = 659,422.80 × 124,036.56
  4. Step 4: Simplify right side
    439,579.62x = 81,792,535,697.57
  5. Step 5: Solve for x
    x = 81,792,535,697.57/439,579.62
  6. Step 6: Final answer
    x = 186,069.90

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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.