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Finding the Fourth Proportional to 326,503.87, 489,944.88 and 136,947.36

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Solution

The fourth proportional to 326,503.87, 489,944.88 and 136,947.36 is: 205,500.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,503.87 : 489,944.88 = 136,947.36 : x
  2. Step 2: Convert to fraction form
    326,503.87/489,944.88 = 136,947.36/x
  3. Step 3: Cross multiply
    326,503.87x = 489,944.88 × 136,947.36
  4. Step 4: Simplify right side
    326,503.87x = 67,096,657,861.52
  5. Step 5: Solve for x
    x = 67,096,657,861.52/326,503.87
  6. Step 6: Final answer
    x = 205,500.34

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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.