Home / 265,837.80-398,778.28-78,848.76

Finding the Fourth Proportional to 265,837.80, 398,778.28 and 78,848.76

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Solution

The fourth proportional to 265,837.80, 398,778.28 and 78,848.76 is: 118,279.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,837.80 : 398,778.28 = 78,848.76 : x
  2. Step 2: Convert to fraction form
    265,837.80/398,778.28 = 78,848.76/x
  3. Step 3: Cross multiply
    265,837.80x = 398,778.28 × 78,848.76
  4. Step 4: Simplify right side
    265,837.80x = 31,443,172,892.93
  5. Step 5: Solve for x
    x = 31,443,172,892.93/265,837.80
  6. Step 6: Final answer
    x = 118,279.54

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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.