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Finding the Fourth Proportional to 218,755.60, 328,140.72 and 60,970.84

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Solution

The fourth proportional to 218,755.60, 328,140.72 and 60,970.84 is: 91,458.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,755.60 : 328,140.72 = 60,970.84 : x
  2. Step 2: Convert to fraction form
    218,755.60/328,140.72 = 60,970.84/x
  3. Step 3: Cross multiply
    218,755.60x = 328,140.72 × 60,970.84
  4. Step 4: Simplify right side
    218,755.60x = 20,007,015,336.60
  5. Step 5: Solve for x
    x = 20,007,015,336.60/218,755.60
  6. Step 6: Final answer
    x = 91,458.30

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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.