Home / 308,898.03-426,229.90-172,937.71

Finding the Fourth Proportional to 308,898.03, 426,229.90 and 172,937.71

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Solution

The fourth proportional to 308,898.03, 426,229.90 and 172,937.71 is: 238,626.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,898.03 : 426,229.90 = 172,937.71 : x
  2. Step 2: Convert to fraction form
    308,898.03/426,229.90 = 172,937.71/x
  3. Step 3: Cross multiply
    308,898.03x = 426,229.90 × 172,937.71
  4. Step 4: Simplify right side
    308,898.03x = 73,711,221,741.20
  5. Step 5: Solve for x
    x = 73,711,221,741.20/308,898.03
  6. Step 6: Final answer
    x = 238,626.39

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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.