Home / 218,104.32-300,984-122,611.20

Finding the Fourth Proportional to 218,104.32, 300,984 and 122,611.20

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Solution

The fourth proportional to 218,104.32, 300,984 and 122,611.20 is: 169,203.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,104.32 : 300,984 = 122,611.20 : x
  2. Step 2: Convert to fraction form
    218,104.32/300,984 = 122,611.20/x
  3. Step 3: Cross multiply
    218,104.32x = 300,984 × 122,611.20
  4. Step 4: Simplify right side
    218,104.32x = 36,904,009,420.80
  5. Step 5: Solve for x
    x = 36,904,009,420.80/218,104.32
  6. Step 6: Final answer
    x = 169,203.48

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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.