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Finding the Fourth Proportional to 206,607.28, 285,094.56 and 115,944.52

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Solution

The fourth proportional to 206,607.28, 285,094.56 and 115,944.52 is: 159,990.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,607.28 : 285,094.56 = 115,944.52 : x
  2. Step 2: Convert to fraction form
    206,607.28/285,094.56 = 115,944.52/x
  3. Step 3: Cross multiply
    206,607.28x = 285,094.56 × 115,944.52
  4. Step 4: Simplify right side
    206,607.28x = 33,055,151,913.81
  5. Step 5: Solve for x
    x = 33,055,151,913.81/206,607.28
  6. Step 6: Final answer
    x = 159,990.26

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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.