Home / 279,520.90-419,152.26-89,945.98

Finding the Fourth Proportional to 279,520.90, 419,152.26 and 89,945.98

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Solution

The fourth proportional to 279,520.90, 419,152.26 and 89,945.98 is: 134,877.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,520.90 : 419,152.26 = 89,945.98 : x
  2. Step 2: Convert to fraction form
    279,520.90/419,152.26 = 89,945.98/x
  3. Step 3: Cross multiply
    279,520.90x = 419,152.26 × 89,945.98
  4. Step 4: Simplify right side
    279,520.90x = 37,701,060,794.91
  5. Step 5: Solve for x
    x = 37,701,060,794.91/279,520.90
  6. Step 6: Final answer
    x = 134,877.43

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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.