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Finding the Fourth Proportional to 263,259.60, 394,889.40 and 258,010.80

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Solution

The fourth proportional to 263,259.60, 394,889.40 and 258,010.80 is: 387,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,259.60 : 394,889.40 = 258,010.80 : x
  2. Step 2: Convert to fraction form
    263,259.60/394,889.40 = 258,010.80/x
  3. Step 3: Cross multiply
    263,259.60x = 394,889.40 × 258,010.80
  4. Step 4: Simplify right side
    263,259.60x = 101,885,730,005.52
  5. Step 5: Solve for x
    x = 101,885,730,005.52/263,259.60
  6. Step 6: Final answer
    x = 387,016.20

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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.