Home / 408,942.18-612,526.32-198,138.06

Finding the Fourth Proportional to 408,942.18, 612,526.32 and 198,138.06

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Solution

The fourth proportional to 408,942.18, 612,526.32 and 198,138.06 is: 296,777.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,942.18 : 612,526.32 = 198,138.06 : x
  2. Step 2: Convert to fraction form
    408,942.18/612,526.32 = 198,138.06/x
  3. Step 3: Cross multiply
    408,942.18x = 612,526.32 × 198,138.06
  4. Step 4: Simplify right side
    408,942.18x = 121,364,776,743.74
  5. Step 5: Solve for x
    x = 121,364,776,743.74/408,942.18
  6. Step 6: Final answer
    x = 296,777.35

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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.