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Finding the Fourth Proportional to 395,452.58, 545,734.55 and 242,575.07

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Solution

The fourth proportional to 395,452.58, 545,734.55 and 242,575.07 is: 334,759.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,452.58 : 545,734.55 = 242,575.07 : x
  2. Step 2: Convert to fraction form
    395,452.58/545,734.55 = 242,575.07/x
  3. Step 3: Cross multiply
    395,452.58x = 545,734.55 × 242,575.07
  4. Step 4: Simplify right side
    395,452.58x = 132,381,594,545.43
  5. Step 5: Solve for x
    x = 132,381,594,545.43/395,452.58
  6. Step 6: Final answer
    x = 334,759.72

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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.