Home / 315,716.68-435,719.04-172,498.24

Finding the Fourth Proportional to 315,716.68, 435,719.04 and 172,498.24

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Solution

The fourth proportional to 315,716.68, 435,719.04 and 172,498.24 is: 238,063.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,716.68 : 435,719.04 = 172,498.24 : x
  2. Step 2: Convert to fraction form
    315,716.68/435,719.04 = 172,498.24/x
  3. Step 3: Cross multiply
    315,716.68x = 435,719.04 × 172,498.24
  4. Step 4: Simplify right side
    315,716.68x = 75,160,767,534.49
  5. Step 5: Solve for x
    x = 75,160,767,534.49/315,716.68
  6. Step 6: Final answer
    x = 238,063.97

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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.