Home / 398,780.19-550,297.25-237,631.65

Finding the Fourth Proportional to 398,780.19, 550,297.25 and 237,631.65

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Solution

The fourth proportional to 398,780.19, 550,297.25 and 237,631.65 is: 327,920.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,780.19 : 550,297.25 = 237,631.65 : x
  2. Step 2: Convert to fraction form
    398,780.19/550,297.25 = 237,631.65/x
  3. Step 3: Cross multiply
    398,780.19x = 550,297.25 × 237,631.65
  4. Step 4: Simplify right side
    398,780.19x = 130,768,042,319.80
  5. Step 5: Solve for x
    x = 130,768,042,319.80/398,780.19
  6. Step 6: Final answer
    x = 327,920.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.