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Finding the Fourth Proportional to 230,564.52, 318,179.60 and 128,596.58

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Solution

The fourth proportional to 230,564.52, 318,179.60 and 128,596.58 is: 177,463.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,564.52 : 318,179.60 = 128,596.58 : x
  2. Step 2: Convert to fraction form
    230,564.52/318,179.60 = 128,596.58/x
  3. Step 3: Cross multiply
    230,564.52x = 318,179.60 × 128,596.58
  4. Step 4: Simplify right side
    230,564.52x = 40,916,809,502.71
  5. Step 5: Solve for x
    x = 40,916,809,502.71/230,564.52
  6. Step 6: Final answer
    x = 177,463.60

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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.