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Finding the Fourth Proportional to 260,711, 359,781.20 and 141,479

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Solution

The fourth proportional to 260,711, 359,781.20 and 141,479 is: 195,241.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,711 : 359,781.20 = 141,479 : x
  2. Step 2: Convert to fraction form
    260,711/359,781.20 = 141,479/x
  3. Step 3: Cross multiply
    260,711x = 359,781.20 × 141,479
  4. Step 4: Simplify right side
    260,711x = 50,901,484,394.80
  5. Step 5: Solve for x
    x = 50,901,484,394.80/260,711
  6. Step 6: Final answer
    x = 195,241.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.