Home / 318,088.80-438,955.25-172,891.17

Finding the Fourth Proportional to 318,088.80, 438,955.25 and 172,891.17

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Solution

The fourth proportional to 318,088.80, 438,955.25 and 172,891.17 is: 238,585.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,088.80 : 438,955.25 = 172,891.17 : x
  2. Step 2: Convert to fraction form
    318,088.80/438,955.25 = 172,891.17/x
  3. Step 3: Cross multiply
    318,088.80x = 438,955.25 × 172,891.17
  4. Step 4: Simplify right side
    318,088.80x = 75,891,485,885.69
  5. Step 5: Solve for x
    x = 75,891,485,885.69/318,088.80
  6. Step 6: Final answer
    x = 238,585.85

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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.