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Finding the Fourth Proportional to 278,490.60, 384,306.72 and 151,163.48

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Solution

The fourth proportional to 278,490.60, 384,306.72 and 151,163.48 is: 208,600.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,490.60 : 384,306.72 = 151,163.48 : x
  2. Step 2: Convert to fraction form
    278,490.60/384,306.72 = 151,163.48/x
  3. Step 3: Cross multiply
    278,490.60x = 384,306.72 × 151,163.48
  4. Step 4: Simplify right side
    278,490.60x = 58,093,141,182.59
  5. Step 5: Solve for x
    x = 58,093,141,182.59/278,490.60
  6. Step 6: Final answer
    x = 208,600.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.