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Finding the Fourth Proportional to 278,589.37, 417,884.51 and 89,065.02

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Solution

The fourth proportional to 278,589.37, 417,884.51 and 89,065.02 is: 133,597.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,589.37 : 417,884.51 = 89,065.02 : x
  2. Step 2: Convert to fraction form
    278,589.37/417,884.51 = 89,065.02/x
  3. Step 3: Cross multiply
    278,589.37x = 417,884.51 × 89,065.02
  4. Step 4: Simplify right side
    278,589.37x = 37,218,892,463.50
  5. Step 5: Solve for x
    x = 37,218,892,463.50/278,589.37
  6. Step 6: Final answer
    x = 133,597.68

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1.5x scale

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.