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Finding the Fourth Proportional to 229,395.12, 316,560.60 and 128,793.12

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Solution

The fourth proportional to 229,395.12, 316,560.60 and 128,793.12 is: 177,731.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,395.12 : 316,560.60 = 128,793.12 : x
  2. Step 2: Convert to fraction form
    229,395.12/316,560.60 = 128,793.12/x
  3. Step 3: Cross multiply
    229,395.12x = 316,560.60 × 128,793.12
  4. Step 4: Simplify right side
    229,395.12x = 40,770,827,343.07
  5. Step 5: Solve for x
    x = 40,770,827,343.07/229,395.12
  6. Step 6: Final answer
    x = 177,731.89

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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.