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Finding the Fourth Proportional to 247,336.55, 370,881.97 and 78,834.95

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Solution

The fourth proportional to 247,336.55, 370,881.97 and 78,834.95 is: 118,213.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,336.55 : 370,881.97 = 78,834.95 : x
  2. Step 2: Convert to fraction form
    247,336.55/370,881.97 = 78,834.95/x
  3. Step 3: Cross multiply
    247,336.55x = 370,881.97 × 78,834.95
  4. Step 4: Simplify right side
    247,336.55x = 29,238,461,560.85
  5. Step 5: Solve for x
    x = 29,238,461,560.85/247,336.55
  6. Step 6: Final answer
    x = 118,213.27

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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.