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Finding the Fourth Proportional to 230,662.08, 318,314.12 and 128,684.97

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Solution

The fourth proportional to 230,662.08, 318,314.12 and 128,684.97 is: 177,585.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,662.08 : 318,314.12 = 128,684.97 : x
  2. Step 2: Convert to fraction form
    230,662.08/318,314.12 = 128,684.97/x
  3. Step 3: Cross multiply
    230,662.08x = 318,314.12 × 128,684.97
  4. Step 4: Simplify right side
    230,662.08x = 40,962,242,339.35
  5. Step 5: Solve for x
    x = 40,962,242,339.35/230,662.08
  6. Step 6: Final answer
    x = 177,585.51

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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.