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Finding the Fourth Proportional to 263,010.80, 394,775.40 and 130,041.20

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Solution

The fourth proportional to 263,010.80, 394,775.40 and 130,041.20 is: 195,189.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,010.80 : 394,775.40 = 130,041.20 : x
  2. Step 2: Convert to fraction form
    263,010.80/394,775.40 = 130,041.20/x
  3. Step 3: Cross multiply
    263,010.80x = 394,775.40 × 130,041.20
  4. Step 4: Simplify right side
    263,010.80x = 51,337,066,746.48
  5. Step 5: Solve for x
    x = 51,337,066,746.48/263,010.80
  6. Step 6: Final answer
    x = 195,189.96

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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.