Home / 317,812.20-438,584.04-172,619.38

Finding the Fourth Proportional to 317,812.20, 438,584.04 and 172,619.38

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Solution

The fourth proportional to 317,812.20, 438,584.04 and 172,619.38 is: 238,216.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,812.20 : 438,584.04 = 172,619.38 : x
  2. Step 2: Convert to fraction form
    317,812.20/438,584.04 = 172,619.38/x
  3. Step 3: Cross multiply
    317,812.20x = 438,584.04 × 172,619.38
  4. Step 4: Simplify right side
    317,812.20x = 75,708,105,610.93
  5. Step 5: Solve for x
    x = 75,708,105,610.93/317,812.20
  6. Step 6: Final answer
    x = 238,216.49

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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.