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Finding the Fourth Proportional to 230,376.48, 317,918.16 and 129,806.88

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Solution

The fourth proportional to 230,376.48, 317,918.16 and 129,806.88 is: 179,132.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,376.48 : 317,918.16 = 129,806.88 : x
  2. Step 2: Convert to fraction form
    230,376.48/317,918.16 = 129,806.88/x
  3. Step 3: Cross multiply
    230,376.48x = 317,918.16 × 129,806.88
  4. Step 4: Simplify right side
    230,376.48x = 41,267,964,444.94
  5. Step 5: Solve for x
    x = 41,267,964,444.94/230,376.48
  6. Step 6: Final answer
    x = 179,132.72

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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.