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Finding the Fourth Proportional to 218,924.30, 301,913.98 and 138,211.58

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Solution

The fourth proportional to 218,924.30, 301,913.98 and 138,211.58 is: 190,604.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,924.30 : 301,913.98 = 138,211.58 : x
  2. Step 2: Convert to fraction form
    218,924.30/301,913.98 = 138,211.58/x
  3. Step 3: Cross multiply
    218,924.30x = 301,913.98 × 138,211.58
  4. Step 4: Simplify right side
    218,924.30x = 41,728,006,344.79
  5. Step 5: Solve for x
    x = 41,728,006,344.79/218,924.30
  6. Step 6: Final answer
    x = 190,604.73

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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.