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Finding the Fourth Proportional to 218,392.40, 301,380.91 and 122,899.11

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Solution

The fourth proportional to 218,392.40, 301,380.91 and 122,899.11 is: 169,600.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,392.40 : 301,380.91 = 122,899.11 : x
  2. Step 2: Convert to fraction form
    218,392.40/301,380.91 = 122,899.11/x
  3. Step 3: Cross multiply
    218,392.40x = 301,380.91 × 122,899.11
  4. Step 4: Simplify right side
    218,392.40x = 37,039,444,172.56
  5. Step 5: Solve for x
    x = 37,039,444,172.56/218,392.40
  6. Step 6: Final answer
    x = 169,600.42

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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.