Home / 279,890.40-419,566.80-92,805.60

Finding the Fourth Proportional to 279,890.40, 419,566.80 and 92,805.60

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Solution

The fourth proportional to 279,890.40, 419,566.80 and 92,805.60 is: 139,119.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,890.40 : 419,566.80 = 92,805.60 : x
  2. Step 2: Convert to fraction form
    279,890.40/419,566.80 = 92,805.60/x
  3. Step 3: Cross multiply
    279,890.40x = 419,566.80 × 92,805.60
  4. Step 4: Simplify right side
    279,890.40x = 38,938,148,614.08
  5. Step 5: Solve for x
    x = 38,938,148,614.08/279,890.40
  6. Step 6: Final answer
    x = 139,119.27

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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.