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Finding the Fourth Proportional to 218,712.60, 328,141.80 and 195,195.60

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Solution

The fourth proportional to 218,712.60, 328,141.80 and 195,195.60 is: 292,858.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,712.60 : 328,141.80 = 195,195.60 : x
  2. Step 2: Convert to fraction form
    218,712.60/328,141.80 = 195,195.60/x
  3. Step 3: Cross multiply
    218,712.60x = 328,141.80 × 195,195.60
  4. Step 4: Simplify right side
    218,712.60x = 64,051,835,536.08
  5. Step 5: Solve for x
    x = 64,051,835,536.08/218,712.60
  6. Step 6: Final answer
    x = 292,858.46

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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.