Home / 398,923.61-597,965.36-132,612.65

Finding the Fourth Proportional to 398,923.61, 597,965.36 and 132,612.65

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Solution

The fourth proportional to 398,923.61, 597,965.36 and 132,612.65 is: 198,779.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,923.61 : 597,965.36 = 132,612.65 : x
  2. Step 2: Convert to fraction form
    398,923.61/597,965.36 = 132,612.65/x
  3. Step 3: Cross multiply
    398,923.61x = 597,965.36 × 132,612.65
  4. Step 4: Simplify right side
    398,923.61x = 79,297,770,334.74
  5. Step 5: Solve for x
    x = 79,297,770,334.74/398,923.61
  6. Step 6: Final answer
    x = 198,779.34

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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.