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Finding the Fourth Proportional to 259,764.90, 389,647.35 and 159,600.30

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Solution

The fourth proportional to 259,764.90, 389,647.35 and 159,600.30 is: 239,400.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,764.90 : 389,647.35 = 159,600.30 : x
  2. Step 2: Convert to fraction form
    259,764.90/389,647.35 = 159,600.30/x
  3. Step 3: Cross multiply
    259,764.90x = 389,647.35 × 159,600.30
  4. Step 4: Simplify right side
    259,764.90x = 62,187,833,954.21
  5. Step 5: Solve for x
    x = 62,187,833,954.21/259,764.90
  6. Step 6: Final answer
    x = 239,400.45

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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.