Home / 292,078.20-438,117.30-198,766.20

Finding the Fourth Proportional to 292,078.20, 438,117.30 and 198,766.20

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Solution

The fourth proportional to 292,078.20, 438,117.30 and 198,766.20 is: 298,149.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,078.20 : 438,117.30 = 198,766.20 : x
  2. Step 2: Convert to fraction form
    292,078.20/438,117.30 = 198,766.20/x
  3. Step 3: Cross multiply
    292,078.20x = 438,117.30 × 198,766.20
  4. Step 4: Simplify right side
    292,078.20x = 87,082,910,875.26
  5. Step 5: Solve for x
    x = 87,082,910,875.26/292,078.20
  6. Step 6: Final answer
    x = 298,149.30

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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.