Home / 431,252.02-647,002.75-178,485.78

Finding the Fourth Proportional to 431,252.02, 647,002.75 and 178,485.78

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Solution

The fourth proportional to 431,252.02, 647,002.75 and 178,485.78 is: 267,780.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,252.02 : 647,002.75 = 178,485.78 : x
  2. Step 2: Convert to fraction form
    431,252.02/647,002.75 = 178,485.78/x
  3. Step 3: Cross multiply
    431,252.02x = 647,002.75 × 178,485.78
  4. Step 4: Simplify right side
    431,252.02x = 115,480,790,495.90
  5. Step 5: Solve for x
    x = 115,480,790,495.90/431,252.02
  6. Step 6: Final answer
    x = 267,780.29

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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.