Home / 279,498.20-419,242.37-69,136.07

Finding the Fourth Proportional to 279,498.20, 419,242.37 and 69,136.07

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Solution

The fourth proportional to 279,498.20, 419,242.37 and 69,136.07 is: 103,702.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,498.20 : 419,242.37 = 69,136.07 : x
  2. Step 2: Convert to fraction form
    279,498.20/419,242.37 = 69,136.07/x
  3. Step 3: Cross multiply
    279,498.20x = 419,242.37 × 69,136.07
  4. Step 4: Simplify right side
    279,498.20x = 28,984,767,397.39
  5. Step 5: Solve for x
    x = 28,984,767,397.39/279,498.20
  6. Step 6: Final answer
    x = 103,702.88

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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.