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Finding the Fourth Proportional to 486,981.79, 672,021.97 and 272,123.62

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Solution

The fourth proportional to 486,981.79, 672,021.97 and 272,123.62 is: 375,523.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,981.79 : 672,021.97 = 272,123.62 : x
  2. Step 2: Convert to fraction form
    486,981.79/672,021.97 = 272,123.62/x
  3. Step 3: Cross multiply
    486,981.79x = 672,021.97 × 272,123.62
  4. Step 4: Simplify right side
    486,981.79x = 182,873,048,835.57
  5. Step 5: Solve for x
    x = 182,873,048,835.57/486,981.79
  6. Step 6: Final answer
    x = 375,523.38

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Similar ratio
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1.5x scale

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.