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Finding the Fourth Proportional to 218,694.60, 328,041.77 and 168,847.47

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Solution

The fourth proportional to 218,694.60, 328,041.77 and 168,847.47 is: 253,271.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,694.60 : 328,041.77 = 168,847.47 : x
  2. Step 2: Convert to fraction form
    218,694.60/328,041.77 = 168,847.47/x
  3. Step 3: Cross multiply
    218,694.60x = 328,041.77 × 168,847.47
  4. Step 4: Simplify right side
    218,694.60x = 55,389,022,074.58
  5. Step 5: Solve for x
    x = 55,389,022,074.58/218,694.60
  6. Step 6: Final answer
    x = 253,271.10

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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.