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Finding the Fourth Proportional to 230,573.64, 318,193.41 and 128,605.57

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Solution

The fourth proportional to 230,573.64, 318,193.41 and 128,605.57 is: 177,476.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,573.64 : 318,193.41 = 128,605.57 : x
  2. Step 2: Convert to fraction form
    230,573.64/318,193.41 = 128,605.57/x
  3. Step 3: Cross multiply
    230,573.64x = 318,193.41 × 128,605.57
  4. Step 4: Simplify right side
    230,573.64x = 40,921,444,863.29
  5. Step 5: Solve for x
    x = 40,921,444,863.29/230,573.64
  6. Step 6: Final answer
    x = 177,476.68

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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.