Home / 276,740.20-415,053.60-77,010.40

Finding the Fourth Proportional to 276,740.20, 415,053.60 and 77,010.40

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Solution

The fourth proportional to 276,740.20, 415,053.60 and 77,010.40 is: 115,499.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,740.20 : 415,053.60 = 77,010.40 : x
  2. Step 2: Convert to fraction form
    276,740.20/415,053.60 = 77,010.40/x
  3. Step 3: Cross multiply
    276,740.20x = 415,053.60 × 77,010.40
  4. Step 4: Simplify right side
    276,740.20x = 31,963,443,757.44
  5. Step 5: Solve for x
    x = 31,963,443,757.44/276,740.20
  6. Step 6: Final answer
    x = 115,499.82

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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.