Home / 278,651.02-417,976.45-68,287.13

Finding the Fourth Proportional to 278,651.02, 417,976.45 and 68,287.13

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Solution

The fourth proportional to 278,651.02, 417,976.45 and 68,287.13 is: 102,430.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,651.02 : 417,976.45 = 68,287.13 : x
  2. Step 2: Convert to fraction form
    278,651.02/417,976.45 = 68,287.13/x
  3. Step 3: Cross multiply
    278,651.02x = 417,976.45 × 68,287.13
  4. Step 4: Simplify right side
    278,651.02x = 28,542,412,178.09
  5. Step 5: Solve for x
    x = 28,542,412,178.09/278,651.02
  6. Step 6: Final answer
    x = 102,430.68

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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.