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Finding the Fourth Proportional to 348,392.64, 522,640.91 and 123,734.21

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Solution

The fourth proportional to 348,392.64, 522,640.91 and 123,734.21 is: 185,619.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,392.64 : 522,640.91 = 123,734.21 : x
  2. Step 2: Convert to fraction form
    348,392.64/522,640.91 = 123,734.21/x
  3. Step 3: Cross multiply
    348,392.64x = 522,640.91 × 123,734.21
  4. Step 4: Simplify right side
    348,392.64x = 64,668,556,880.66
  5. Step 5: Solve for x
    x = 64,668,556,880.66/348,392.64
  6. Step 6: Final answer
    x = 185,619.76

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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.