Home / 642,963.80-964,081.20-243,617.60

Finding the Fourth Proportional to 642,963.80, 964,081.20 and 243,617.60

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Solution

The fourth proportional to 642,963.80, 964,081.20 and 243,617.60 is: 365,288.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,963.80 : 964,081.20 = 243,617.60 : x
  2. Step 2: Convert to fraction form
    642,963.80/964,081.20 = 243,617.60/x
  3. Step 3: Cross multiply
    642,963.80x = 964,081.20 × 243,617.60
  4. Step 4: Simplify right side
    642,963.80x = 234,867,148,149.12
  5. Step 5: Solve for x
    x = 234,867,148,149.12/642,963.80
  6. Step 6: Final answer
    x = 365,288.29

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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.