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Finding the Fourth Proportional to 222,122.39, 306,535.93 and 121,520.39

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Solution

The fourth proportional to 222,122.39, 306,535.93 and 121,520.39 is: 167,701.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,122.39 : 306,535.93 = 121,520.39 : x
  2. Step 2: Convert to fraction form
    222,122.39/306,535.93 = 121,520.39/x
  3. Step 3: Cross multiply
    222,122.39x = 306,535.93 × 121,520.39
  4. Step 4: Simplify right side
    222,122.39x = 37,250,363,926.13
  5. Step 5: Solve for x
    x = 37,250,363,926.13/222,122.39
  6. Step 6: Final answer
    x = 167,701.98

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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.