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Finding the Fourth Proportional to 263,129.60, 394,398.95 and 130,103.30

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Solution

The fourth proportional to 263,129.60, 394,398.95 and 130,103.30 is: 195,008.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,129.60 : 394,398.95 = 130,103.30 : x
  2. Step 2: Convert to fraction form
    263,129.60/394,398.95 = 130,103.30/x
  3. Step 3: Cross multiply
    263,129.60x = 394,398.95 × 130,103.30
  4. Step 4: Simplify right side
    263,129.60x = 51,312,602,289.02
  5. Step 5: Solve for x
    x = 51,312,602,289.02/263,129.60
  6. Step 6: Final answer
    x = 195,008.86

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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.