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Finding the Fourth Proportional to 239,707.15, 359,619.24 and 79,782.77

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Solution

The fourth proportional to 239,707.15, 359,619.24 and 79,782.77 is: 119,693.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,707.15 : 359,619.24 = 79,782.77 : x
  2. Step 2: Convert to fraction form
    239,707.15/359,619.24 = 79,782.77/x
  3. Step 3: Cross multiply
    239,707.15x = 359,619.24 × 79,782.77
  4. Step 4: Simplify right side
    239,707.15x = 28,691,420,310.73
  5. Step 5: Solve for x
    x = 28,691,420,310.73/239,707.15
  6. Step 6: Final answer
    x = 119,693.64

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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.