Home / 230,029.20-317,432.52-129,407.76

Finding the Fourth Proportional to 230,029.20, 317,432.52 and 129,407.76

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Solution

The fourth proportional to 230,029.20, 317,432.52 and 129,407.76 is: 178,578.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,029.20 : 317,432.52 = 129,407.76 : x
  2. Step 2: Convert to fraction form
    230,029.20/317,432.52 = 129,407.76/x
  3. Step 3: Cross multiply
    230,029.20x = 317,432.52 × 129,407.76
  4. Step 4: Simplify right side
    230,029.20x = 41,078,231,364.36
  5. Step 5: Solve for x
    x = 41,078,231,364.36/230,029.20
  6. Step 6: Final answer
    x = 178,578.33

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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.