Home / 279,508.20-419,203.40-89,985.48

Finding the Fourth Proportional to 279,508.20, 419,203.40 and 89,985.48

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Solution

The fourth proportional to 279,508.20, 419,203.40 and 89,985.48 is: 134,959.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,508.20 : 419,203.40 = 89,985.48 : x
  2. Step 2: Convert to fraction form
    279,508.20/419,203.40 = 89,985.48/x
  3. Step 3: Cross multiply
    279,508.20x = 419,203.40 × 89,985.48
  4. Step 4: Simplify right side
    279,508.20x = 37,722,219,166.63
  5. Step 5: Solve for x
    x = 37,722,219,166.63/279,508.20
  6. Step 6: Final answer
    x = 134,959.26

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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.