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Finding the Fourth Proportional to 243,145.80, 364,560.30 and 218,262.60

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Solution

The fourth proportional to 243,145.80, 364,560.30 and 218,262.60 is: 327,251.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,145.80 : 364,560.30 = 218,262.60 : x
  2. Step 2: Convert to fraction form
    243,145.80/364,560.30 = 218,262.60/x
  3. Step 3: Cross multiply
    243,145.80x = 364,560.30 × 218,262.60
  4. Step 4: Simplify right side
    243,145.80x = 79,569,878,934.78
  5. Step 5: Solve for x
    x = 79,569,878,934.78/243,145.80
  6. Step 6: Final answer
    x = 327,251.71

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1.5x scale

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.