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Finding the Fourth Proportional to 229,062.88, 316,105.68 and 128,460.88

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Solution

The fourth proportional to 229,062.88, 316,105.68 and 128,460.88 is: 177,275.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,062.88 : 316,105.68 = 128,460.88 : x
  2. Step 2: Convert to fraction form
    229,062.88/316,105.68 = 128,460.88/x
  3. Step 3: Cross multiply
    229,062.88x = 316,105.68 × 128,460.88
  4. Step 4: Simplify right side
    229,062.88x = 40,607,213,825.80
  5. Step 5: Solve for x
    x = 40,607,213,825.80/229,062.88
  6. Step 6: Final answer
    x = 177,275.40

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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.