Home / 431,946.02-647,919.10-221,449.70

Finding the Fourth Proportional to 431,946.02, 647,919.10 and 221,449.70

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Solution

The fourth proportional to 431,946.02, 647,919.10 and 221,449.70 is: 332,174.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,946.02 : 647,919.10 = 221,449.70 : x
  2. Step 2: Convert to fraction form
    431,946.02/647,919.10 = 221,449.70/x
  3. Step 3: Cross multiply
    431,946.02x = 647,919.10 × 221,449.70
  4. Step 4: Simplify right side
    431,946.02x = 143,481,490,319.27
  5. Step 5: Solve for x
    x = 143,481,490,319.27/431,946.02
  6. Step 6: Final answer
    x = 332,174.59

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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.