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Finding the Fourth Proportional to 395,387.56, 545,613.25 and 234,257.50

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Solution

The fourth proportional to 395,387.56, 545,613.25 and 234,257.50 is: 323,262.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,387.56 : 545,613.25 = 234,257.50 : x
  2. Step 2: Convert to fraction form
    395,387.56/545,613.25 = 234,257.50/x
  3. Step 3: Cross multiply
    395,387.56x = 545,613.25 × 234,257.50
  4. Step 4: Simplify right side
    395,387.56x = 127,813,992,012.52
  5. Step 5: Solve for x
    x = 127,813,992,012.52/395,387.56
  6. Step 6: Final answer
    x = 323,262.56

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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.