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Finding the Fourth Proportional to 260,042.60, 390,063.90 and 222,717.80

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Solution

The fourth proportional to 260,042.60, 390,063.90 and 222,717.80 is: 334,076.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,042.60 : 390,063.90 = 222,717.80 : x
  2. Step 2: Convert to fraction form
    260,042.60/390,063.90 = 222,717.80/x
  3. Step 3: Cross multiply
    260,042.60x = 390,063.90 × 222,717.80
  4. Step 4: Simplify right side
    260,042.60x = 86,874,173,667.42
  5. Step 5: Solve for x
    x = 86,874,173,667.42/260,042.60
  6. Step 6: Final answer
    x = 334,076.70

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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.