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Finding the Fourth Proportional to 222,426, 306,947.88 and 121,827.60

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Solution

The fourth proportional to 222,426, 306,947.88 and 121,827.60 is: 168,122.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,426 : 306,947.88 = 121,827.60 : x
  2. Step 2: Convert to fraction form
    222,426/306,947.88 = 121,827.60/x
  3. Step 3: Cross multiply
    222,426x = 306,947.88 × 121,827.60
  4. Step 4: Simplify right side
    222,426x = 37,394,723,545.49
  5. Step 5: Solve for x
    x = 37,394,723,545.49/222,426
  6. Step 6: Final answer
    x = 168,122.09

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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.