Home / 230,311.05-317,824.45-128,336.10

Finding the Fourth Proportional to 230,311.05, 317,824.45 and 128,336.10

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Solution

The fourth proportional to 230,311.05, 317,824.45 and 128,336.10 is: 177,101.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,311.05 : 317,824.45 = 128,336.10 : x
  2. Step 2: Convert to fraction form
    230,311.05/317,824.45 = 128,336.10/x
  3. Step 3: Cross multiply
    230,311.05x = 317,824.45 × 128,336.10
  4. Step 4: Simplify right side
    230,311.05x = 40,788,350,397.65
  5. Step 5: Solve for x
    x = 40,788,350,397.65/230,311.05
  6. Step 6: Final answer
    x = 177,101.14

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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.