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Finding the Fourth Proportional to 215,318,723.60, 322,978,085.40 and 100,527,467.60

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Solution

The fourth proportional to 215,318,723.60, 322,978,085.40 and 100,527,467.60 is: 150,791,201.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,318,723.60 : 322,978,085.40 = 100,527,467.60 : x
  2. Step 2: Convert to fraction form
    215,318,723.60/322,978,085.40 = 100,527,467.60/x
  3. Step 3: Cross multiply
    215,318,723.60x = 322,978,085.40 × 100,527,467.60
  4. Step 4: Simplify right side
    215,318,723.60x = 32,468,169,015,558,528
  5. Step 5: Solve for x
    x = 32,468,169,015,558,528/215,318,723.60
  6. Step 6: Final answer
    x = 150,791,201.40

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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.