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Finding the Fourth Proportional to 218,330.40, 301,274.48 and 122,835.04

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Solution

The fourth proportional to 218,330.40, 301,274.48 and 122,835.04 is: 169,500.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,330.40 : 301,274.48 = 122,835.04 : x
  2. Step 2: Convert to fraction form
    218,330.40/301,274.48 = 122,835.04/x
  3. Step 3: Cross multiply
    218,330.40x = 301,274.48 × 122,835.04
  4. Step 4: Simplify right side
    218,330.40x = 37,007,062,801.78
  5. Step 5: Solve for x
    x = 37,007,062,801.78/218,330.40
  6. Step 6: Final answer
    x = 169,500.27

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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.