Home / 278,495.28-417,745.17-78,822.18

Finding the Fourth Proportional to 278,495.28, 417,745.17 and 78,822.18

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Solution

The fourth proportional to 278,495.28, 417,745.17 and 78,822.18 is: 118,233.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,495.28 : 417,745.17 = 78,822.18 : x
  2. Step 2: Convert to fraction form
    278,495.28/417,745.17 = 78,822.18/x
  3. Step 3: Cross multiply
    278,495.28x = 417,745.17 × 78,822.18
  4. Step 4: Simplify right side
    278,495.28x = 32,927,584,983.87
  5. Step 5: Solve for x
    x = 32,927,584,983.87/278,495.28
  6. Step 6: Final answer
    x = 118,233.91

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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.