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Finding the Fourth Proportional to 230,488.73, 318,051.12 and 128,504.53

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Solution

The fourth proportional to 230,488.73, 318,051.12 and 128,504.53 is: 177,323.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,488.73 : 318,051.12 = 128,504.53 : x
  2. Step 2: Convert to fraction form
    230,488.73/318,051.12 = 128,504.53/x
  3. Step 3: Cross multiply
    230,488.73x = 318,051.12 × 128,504.53
  4. Step 4: Simplify right side
    230,488.73x = 40,871,009,691.57
  5. Step 5: Solve for x
    x = 40,871,009,691.57/230,488.73
  6. Step 6: Final answer
    x = 177,323.25

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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.