Home / 431,933.02-647,899.60-221,436.70

Finding the Fourth Proportional to 431,933.02, 647,899.60 and 221,436.70

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Solution

The fourth proportional to 431,933.02, 647,899.60 and 221,436.70 is: 332,155.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,933.02 : 647,899.60 = 221,436.70 : x
  2. Step 2: Convert to fraction form
    431,933.02/647,899.60 = 221,436.70/x
  3. Step 3: Cross multiply
    431,933.02x = 647,899.60 × 221,436.70
  4. Step 4: Simplify right side
    431,933.02x = 143,468,749,355.32
  5. Step 5: Solve for x
    x = 143,468,749,355.32/431,933.02
  6. Step 6: Final answer
    x = 332,155.09

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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.