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Finding the Fourth Proportional to 151,278.60, 218,121.12 and 151,278.60

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Solution

The fourth proportional to 151,278.60, 218,121.12 and 151,278.60 is: 218,121.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,278.60 : 218,121.12 = 151,278.60 : x
  2. Step 2: Convert to fraction form
    151,278.60/218,121.12 = 151,278.60/x
  3. Step 3: Cross multiply
    151,278.60x = 218,121.12 × 151,278.60
  4. Step 4: Simplify right side
    151,278.60x = 32,997,057,664.03
  5. Step 5: Solve for x
    x = 32,997,057,664.03/151,278.60
  6. Step 6: Final answer
    x = 218,121.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.