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Finding the Fourth Proportional to 218,392.38, 301,380.53 and 122,900.67

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Solution

The fourth proportional to 218,392.38, 301,380.53 and 122,900.67 is: 169,602.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,392.38 : 301,380.53 = 122,900.67 : x
  2. Step 2: Convert to fraction form
    218,392.38/301,380.53 = 122,900.67/x
  3. Step 3: Cross multiply
    218,392.38x = 301,380.53 × 122,900.67
  4. Step 4: Simplify right side
    218,392.38x = 37,039,868,447.45
  5. Step 5: Solve for x
    x = 37,039,868,447.45/218,392.38
  6. Step 6: Final answer
    x = 169,602.38

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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.