Home / 230,791.19-318,478.89-128,823.23

Finding the Fourth Proportional to 230,791.19, 318,478.89 and 128,823.23

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Solution

The fourth proportional to 230,791.19, 318,478.89 and 128,823.23 is: 177,768.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,791.19 : 318,478.89 = 128,823.23 : x
  2. Step 2: Convert to fraction form
    230,791.19/318,478.89 = 128,823.23/x
  3. Step 3: Cross multiply
    230,791.19x = 318,478.89 × 128,823.23
  4. Step 4: Simplify right side
    230,791.19x = 41,027,480,092.81
  5. Step 5: Solve for x
    x = 41,027,480,092.81/230,791.19
  6. Step 6: Final answer
    x = 177,768.83

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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.