Home / 431,948.52-647,922.85-221,452.20

Finding the Fourth Proportional to 431,948.52, 647,922.85 and 221,452.20

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Solution

The fourth proportional to 431,948.52, 647,922.85 and 221,452.20 is: 332,178.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,948.52 : 647,922.85 = 221,452.20 : x
  2. Step 2: Convert to fraction form
    431,948.52/647,922.85 = 221,452.20/x
  3. Step 3: Cross multiply
    431,948.52x = 647,922.85 × 221,452.20
  4. Step 4: Simplify right side
    431,948.52x = 143,483,940,562.77
  5. Step 5: Solve for x
    x = 143,483,940,562.77/431,948.52
  6. Step 6: Final answer
    x = 332,178.34

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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.