Home / 431,036.20-646,554.30-168,380.20

Finding the Fourth Proportional to 431,036.20, 646,554.30 and 168,380.20

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Solution

The fourth proportional to 431,036.20, 646,554.30 and 168,380.20 is: 252,570.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,036.20 : 646,554.30 = 168,380.20 : x
  2. Step 2: Convert to fraction form
    431,036.20/646,554.30 = 168,380.20/x
  3. Step 3: Cross multiply
    431,036.20x = 646,554.30 × 168,380.20
  4. Step 4: Simplify right side
    431,036.20x = 108,866,942,344.86
  5. Step 5: Solve for x
    x = 108,866,942,344.86/431,036.20
  6. Step 6: Final answer
    x = 252,570.30

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.