Home / 306,581.20-423,095.88-172,445.20

Finding the Fourth Proportional to 306,581.20, 423,095.88 and 172,445.20

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Solution

The fourth proportional to 306,581.20, 423,095.88 and 172,445.20 is: 237,982.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,581.20 : 423,095.88 = 172,445.20 : x
  2. Step 2: Convert to fraction form
    306,581.20/423,095.88 = 172,445.20/x
  3. Step 3: Cross multiply
    306,581.20x = 423,095.88 × 172,445.20
  4. Step 4: Simplify right side
    306,581.20x = 72,960,853,645.78
  5. Step 5: Solve for x
    x = 72,960,853,645.78/306,581.20
  6. Step 6: Final answer
    x = 237,982.15

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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.