Home / 310,306.08-465,449.82-85,680.24

Finding the Fourth Proportional to 310,306.08, 465,449.82 and 85,680.24

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Solution

The fourth proportional to 310,306.08, 465,449.82 and 85,680.24 is: 128,517.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,306.08 : 465,449.82 = 85,680.24 : x
  2. Step 2: Convert to fraction form
    310,306.08/465,449.82 = 85,680.24/x
  3. Step 3: Cross multiply
    310,306.08x = 465,449.82 × 85,680.24
  4. Step 4: Simplify right side
    310,306.08x = 39,879,852,285.56
  5. Step 5: Solve for x
    x = 39,879,852,285.56/310,306.08
  6. Step 6: Final answer
    x = 128,517.79

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1.5x scale

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.