Home / 230,217.48-317,657.97-128,240.42

Finding the Fourth Proportional to 230,217.48, 317,657.97 and 128,240.42

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Solution

The fourth proportional to 230,217.48, 317,657.97 and 128,240.42 is: 176,948.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,217.48 : 317,657.97 = 128,240.42 : x
  2. Step 2: Convert to fraction form
    230,217.48/317,657.97 = 128,240.42/x
  3. Step 3: Cross multiply
    230,217.48x = 317,657.97 × 128,240.42
  4. Step 4: Simplify right side
    230,217.48x = 40,736,589,900.86
  5. Step 5: Solve for x
    x = 40,736,589,900.86/230,217.48
  6. Step 6: Final answer
    x = 176,948.29

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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.