Home / 642,961.80-964,078.20-243,615.60

Finding the Fourth Proportional to 642,961.80, 964,078.20 and 243,615.60

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Solution

The fourth proportional to 642,961.80, 964,078.20 and 243,615.60 is: 365,285.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,961.80 : 964,078.20 = 243,615.60 : x
  2. Step 2: Convert to fraction form
    642,961.80/964,078.20 = 243,615.60/x
  3. Step 3: Cross multiply
    642,961.80x = 964,078.20 × 243,615.60
  4. Step 4: Simplify right side
    642,961.80x = 234,864,489,139.92
  5. Step 5: Solve for x
    x = 234,864,489,139.92/642,961.80
  6. Step 6: Final answer
    x = 365,285.29

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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.