Home / 431,824.40-647,542.20-195,045.20

Finding the Fourth Proportional to 431,824.40, 647,542.20 and 195,045.20

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Solution

The fourth proportional to 431,824.40, 647,542.20 and 195,045.20 is: 292,479.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,824.40 : 647,542.20 = 195,045.20 : x
  2. Step 2: Convert to fraction form
    431,824.40/647,542.20 = 195,045.20/x
  3. Step 3: Cross multiply
    431,824.40x = 647,542.20 × 195,045.20
  4. Step 4: Simplify right side
    431,824.40x = 126,299,997,907.44
  5. Step 5: Solve for x
    x = 126,299,997,907.44/431,824.40
  6. Step 6: Final answer
    x = 292,479.99

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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.