Home / 315,621.67-435,551.16-172,382.29

Finding the Fourth Proportional to 315,621.67, 435,551.16 and 172,382.29

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Solution

The fourth proportional to 315,621.67, 435,551.16 and 172,382.29 is: 237,883.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,621.67 : 435,551.16 = 172,382.29 : x
  2. Step 2: Convert to fraction form
    315,621.67/435,551.16 = 172,382.29/x
  3. Step 3: Cross multiply
    315,621.67x = 435,551.16 × 172,382.29
  4. Step 4: Simplify right side
    315,621.67x = 75,081,304,195.20
  5. Step 5: Solve for x
    x = 75,081,304,195.20/315,621.67
  6. Step 6: Final answer
    x = 237,883.87

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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.