Home / 498,278.25-687,623.80-271,923.75

Finding the Fourth Proportional to 498,278.25, 687,623.80 and 271,923.75

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Solution

The fourth proportional to 498,278.25, 687,623.80 and 271,923.75 is: 375,254.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,278.25 : 687,623.80 = 271,923.75 : x
  2. Step 2: Convert to fraction form
    498,278.25/687,623.80 = 271,923.75/x
  3. Step 3: Cross multiply
    498,278.25x = 687,623.80 × 271,923.75
  4. Step 4: Simplify right side
    498,278.25x = 186,981,242,285.25
  5. Step 5: Solve for x
    x = 186,981,242,285.25/498,278.25
  6. Step 6: Final answer
    x = 375,254.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.