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Finding the Fourth Proportional to 159,436.80, 239,155.20 and 152,179.20

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Solution

The fourth proportional to 159,436.80, 239,155.20 and 152,179.20 is: 228,268.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,436.80 : 239,155.20 = 152,179.20 : x
  2. Step 2: Convert to fraction form
    159,436.80/239,155.20 = 152,179.20/x
  3. Step 3: Cross multiply
    159,436.80x = 239,155.20 × 152,179.20
  4. Step 4: Simplify right side
    159,436.80x = 36,394,447,011.84
  5. Step 5: Solve for x
    x = 36,394,447,011.84/159,436.80
  6. Step 6: Final answer
    x = 228,268.80

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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.