Home / 306,821.25-423,452.21-172,711.17

Finding the Fourth Proportional to 306,821.25, 423,452.21 and 172,711.17

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Solution

The fourth proportional to 306,821.25, 423,452.21 and 172,711.17 is: 238,363.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,821.25 : 423,452.21 = 172,711.17 : x
  2. Step 2: Convert to fraction form
    306,821.25/423,452.21 = 172,711.17/x
  3. Step 3: Cross multiply
    306,821.25x = 423,452.21 × 172,711.17
  4. Step 4: Simplify right side
    306,821.25x = 73,134,925,764.63
  5. Step 5: Solve for x
    x = 73,134,925,764.63/306,821.25
  6. Step 6: Final answer
    x = 238,363.30

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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.