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Finding the Fourth Proportional to 545,279.38, 752,375.60 and 330,294.55

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Solution

The fourth proportional to 545,279.38, 752,375.60 and 330,294.55 is: 455,739.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,279.38 : 752,375.60 = 330,294.55 : x
  2. Step 2: Convert to fraction form
    545,279.38/752,375.60 = 330,294.55/x
  3. Step 3: Cross multiply
    545,279.38x = 752,375.60 × 330,294.55
  4. Step 4: Simplify right side
    545,279.38x = 248,505,557,939.17
  5. Step 5: Solve for x
    x = 248,505,557,939.17/545,279.38
  6. Step 6: Final answer
    x = 455,739.88

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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.