Home / 230,456.38-318,031.18-128,488.26

Finding the Fourth Proportional to 230,456.38, 318,031.18 and 128,488.26

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Solution

The fourth proportional to 230,456.38, 318,031.18 and 128,488.26 is: 177,314.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,456.38 : 318,031.18 = 128,488.26 : x
  2. Step 2: Convert to fraction form
    230,456.38/318,031.18 = 128,488.26/x
  3. Step 3: Cross multiply
    230,456.38x = 318,031.18 × 128,488.26
  4. Step 4: Simplify right side
    230,456.38x = 40,863,272,943.95
  5. Step 5: Solve for x
    x = 40,863,272,943.95/230,456.38
  6. Step 6: Final answer
    x = 177,314.57

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1.5x scale

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.