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Finding the Fourth Proportional to 545,279.08, 818,085.55 and 279,227.97

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Solution

The fourth proportional to 545,279.08, 818,085.55 and 279,227.97 is: 418,927.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,279.08 : 818,085.55 = 279,227.97 : x
  2. Step 2: Convert to fraction form
    545,279.08/818,085.55 = 279,227.97/x
  3. Step 3: Cross multiply
    545,279.08x = 818,085.55 × 279,227.97
  4. Step 4: Simplify right side
    545,279.08x = 228,432,367,412.83
  5. Step 5: Solve for x
    x = 228,432,367,412.83/545,279.08
  6. Step 6: Final answer
    x = 418,927.44

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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.