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Finding the Fourth Proportional to 247,295.88, 370,993.05 and 78,810.75

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Solution

The fourth proportional to 247,295.88, 370,993.05 and 78,810.75 is: 118,231.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,295.88 : 370,993.05 = 78,810.75 : x
  2. Step 2: Convert to fraction form
    247,295.88/370,993.05 = 78,810.75/x
  3. Step 3: Cross multiply
    247,295.88x = 370,993.05 × 78,810.75
  4. Step 4: Simplify right side
    247,295.88x = 29,238,240,515.29
  5. Step 5: Solve for x
    x = 29,238,240,515.29/247,295.88
  6. Step 6: Final answer
    x = 118,231.81

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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.