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Finding the Fourth Proportional to 263,630.42, 395,363.80 and 95,128.88

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Solution

The fourth proportional to 263,630.42, 395,363.80 and 95,128.88 is: 142,663.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,630.42 : 395,363.80 = 95,128.88 : x
  2. Step 2: Convert to fraction form
    263,630.42/395,363.80 = 95,128.88/x
  3. Step 3: Cross multiply
    263,630.42x = 395,363.80 × 95,128.88
  4. Step 4: Simplify right side
    263,630.42x = 37,610,513,271.90
  5. Step 5: Solve for x
    x = 37,610,513,271.90/263,630.42
  6. Step 6: Final answer
    x = 142,663.79

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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.