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Finding the Fourth Proportional to 218,200.78, 301,118.88 and 122,706.64

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Solution

The fourth proportional to 218,200.78, 301,118.88 and 122,706.64 is: 169,336.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,200.78 : 301,118.88 = 122,706.64 : x
  2. Step 2: Convert to fraction form
    218,200.78/301,118.88 = 122,706.64/x
  3. Step 3: Cross multiply
    218,200.78x = 301,118.88 × 122,706.64
  4. Step 4: Simplify right side
    218,200.78x = 36,949,286,005.36
  5. Step 5: Solve for x
    x = 36,949,286,005.36/218,200.78
  6. Step 6: Final answer
    x = 169,336.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.