Home / 230,404.18-317,959.20-128,436.12

Finding the Fourth Proportional to 230,404.18, 317,959.20 and 128,436.12

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Solution

The fourth proportional to 230,404.18, 317,959.20 and 128,436.12 is: 177,242.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,404.18 : 317,959.20 = 128,436.12 : x
  2. Step 2: Convert to fraction form
    230,404.18/317,959.20 = 128,436.12/x
  3. Step 3: Cross multiply
    230,404.18x = 317,959.20 × 128,436.12
  4. Step 4: Simplify right side
    230,404.18x = 40,837,445,966.30
  5. Step 5: Solve for x
    x = 40,837,445,966.30/230,404.18
  6. Step 6: Final answer
    x = 177,242.64

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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.