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Finding the Fourth Proportional to 284,708.48, 391,764.48 and 276,051.20

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Solution

The fourth proportional to 284,708.48, 391,764.48 and 276,051.20 is: 379,851.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,708.48 : 391,764.48 = 276,051.20 : x
  2. Step 2: Convert to fraction form
    284,708.48/391,764.48 = 276,051.20/x
  3. Step 3: Cross multiply
    284,708.48x = 391,764.48 × 276,051.20
  4. Step 4: Simplify right side
    284,708.48x = 108,147,054,821.38
  5. Step 5: Solve for x
    x = 108,147,054,821.38/284,708.48
  6. Step 6: Final answer
    x = 379,851.89

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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.