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Finding the Fourth Proportional to 243,320.80, 364,822.80 and 218,437.60

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Solution

The fourth proportional to 243,320.80, 364,822.80 and 218,437.60 is: 327,514.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,320.80 : 364,822.80 = 218,437.60 : x
  2. Step 2: Convert to fraction form
    243,320.80/364,822.80 = 218,437.60/x
  3. Step 3: Cross multiply
    243,320.80x = 364,822.80 × 218,437.60
  4. Step 4: Simplify right side
    243,320.80x = 79,691,016,857.28
  5. Step 5: Solve for x
    x = 79,691,016,857.28/243,320.80
  6. Step 6: Final answer
    x = 327,514.20

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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.