Home / 278,139.48-417,024.84-100,623.12

Finding the Fourth Proportional to 278,139.48, 417,024.84 and 100,623.12

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Solution

The fourth proportional to 278,139.48, 417,024.84 and 100,623.12 is: 150,867.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,139.48 : 417,024.84 = 100,623.12 : x
  2. Step 2: Convert to fraction form
    278,139.48/417,024.84 = 100,623.12/x
  3. Step 3: Cross multiply
    278,139.48x = 417,024.84 × 100,623.12
  4. Step 4: Simplify right side
    278,139.48x = 41,962,340,518.30
  5. Step 5: Solve for x
    x = 41,962,340,518.30/278,139.48
  6. Step 6: Final answer
    x = 150,867.98

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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.