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Finding the Fourth Proportional to 230,446.82, 318,017.93 and 128,478.75

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Solution

The fourth proportional to 230,446.82, 318,017.93 and 128,478.75 is: 177,301.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,446.82 : 318,017.93 = 128,478.75 : x
  2. Step 2: Convert to fraction form
    230,446.82/318,017.93 = 128,478.75/x
  3. Step 3: Cross multiply
    230,446.82x = 318,017.93 × 128,478.75
  4. Step 4: Simplify right side
    230,446.82x = 40,858,545,481.59
  5. Step 5: Solve for x
    x = 40,858,545,481.59/230,446.82
  6. Step 6: Final answer
    x = 177,301.41

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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.