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Finding the Fourth Proportional to 229,570.96, 316,806.24 and 128,968.96

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Solution

The fourth proportional to 229,570.96, 316,806.24 and 128,968.96 is: 177,976.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,570.96 : 316,806.24 = 128,968.96 : x
  2. Step 2: Convert to fraction form
    229,570.96/316,806.24 = 128,968.96/x
  3. Step 3: Cross multiply
    229,570.96x = 316,806.24 × 128,968.96
  4. Step 4: Simplify right side
    229,570.96x = 40,858,171,294.31
  5. Step 5: Solve for x
    x = 40,858,171,294.31/229,570.96
  6. Step 6: Final answer
    x = 177,976.22

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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.