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Finding the Fourth Proportional to 302,536.80, 453,805.20 and 80,920.80

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Solution

The fourth proportional to 302,536.80, 453,805.20 and 80,920.80 is: 121,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,536.80 : 453,805.20 = 80,920.80 : x
  2. Step 2: Convert to fraction form
    302,536.80/453,805.20 = 80,920.80/x
  3. Step 3: Cross multiply
    302,536.80x = 453,805.20 × 80,920.80
  4. Step 4: Simplify right side
    302,536.80x = 36,722,279,828.16
  5. Step 5: Solve for x
    x = 36,722,279,828.16/302,536.80
  6. Step 6: Final answer
    x = 121,381.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.