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Finding the Fourth Proportional to 247,335.69, 370,880.67 and 78,834.09

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Solution

The fourth proportional to 247,335.69, 370,880.67 and 78,834.09 is: 118,211.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,335.69 : 370,880.67 = 78,834.09 : x
  2. Step 2: Convert to fraction form
    247,335.69/370,880.67 = 78,834.09/x
  3. Step 3: Cross multiply
    247,335.69x = 370,880.67 × 78,834.09
  4. Step 4: Simplify right side
    247,335.69x = 29,238,040,118.04
  5. Step 5: Solve for x
    x = 29,238,040,118.04/247,335.69
  6. Step 6: Final answer
    x = 118,211.97

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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.