Home / 305,280.90-457,921.35-198,992.70

Finding the Fourth Proportional to 305,280.90, 457,921.35 and 198,992.70

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Solution

The fourth proportional to 305,280.90, 457,921.35 and 198,992.70 is: 298,489.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,280.90 : 457,921.35 = 198,992.70 : x
  2. Step 2: Convert to fraction form
    305,280.90/457,921.35 = 198,992.70/x
  3. Step 3: Cross multiply
    305,280.90x = 457,921.35 × 198,992.70
  4. Step 4: Simplify right side
    305,280.90x = 91,123,005,824.15
  5. Step 5: Solve for x
    x = 91,123,005,824.15/305,280.90
  6. Step 6: Final answer
    x = 298,489.05

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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.