Home / 431,941.02-647,911.60-221,444.70

Finding the Fourth Proportional to 431,941.02, 647,911.60 and 221,444.70

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Solution

The fourth proportional to 431,941.02, 647,911.60 and 221,444.70 is: 332,167.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,941.02 : 647,911.60 = 221,444.70 : x
  2. Step 2: Convert to fraction form
    431,941.02/647,911.60 = 221,444.70/x
  3. Step 3: Cross multiply
    431,941.02x = 647,911.60 × 221,444.70
  4. Step 4: Simplify right side
    431,941.02x = 143,476,589,888.52
  5. Step 5: Solve for x
    x = 143,476,589,888.52/431,941.02
  6. Step 6: Final answer
    x = 332,167.09

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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.