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Finding the Fourth Proportional to 260,042.20, 390,101.10 and 110,282.20

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Solution

The fourth proportional to 260,042.20, 390,101.10 and 110,282.20 is: 165,439.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,042.20 : 390,101.10 = 110,282.20 : x
  2. Step 2: Convert to fraction form
    260,042.20/390,101.10 = 110,282.20/x
  3. Step 3: Cross multiply
    260,042.20x = 390,101.10 × 110,282.20
  4. Step 4: Simplify right side
    260,042.20x = 43,021,207,530.42
  5. Step 5: Solve for x
    x = 43,021,207,530.42/260,042.20
  6. Step 6: Final answer
    x = 165,439.33

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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.