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Finding the Fourth Proportional to 229,061.44, 316,104.48 and 128,458.56

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Solution

The fourth proportional to 229,061.44, 316,104.48 and 128,458.56 is: 177,272.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,061.44 : 316,104.48 = 128,458.56 : x
  2. Step 2: Convert to fraction form
    229,061.44/316,104.48 = 128,458.56/x
  3. Step 3: Cross multiply
    229,061.44x = 316,104.48 × 128,458.56
  4. Step 4: Simplify right side
    229,061.44x = 40,606,326,310.35
  5. Step 5: Solve for x
    x = 40,606,326,310.35/229,061.44
  6. Step 6: Final answer
    x = 177,272.64

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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.