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Finding the Fourth Proportional to 222,363.69, 306,862.10 and 120,389.23

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Solution

The fourth proportional to 222,363.69, 306,862.10 and 120,389.23 is: 166,137.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,363.69 : 306,862.10 = 120,389.23 : x
  2. Step 2: Convert to fraction form
    222,363.69/306,862.10 = 120,389.23/x
  3. Step 3: Cross multiply
    222,363.69x = 306,862.10 × 120,389.23
  4. Step 4: Simplify right side
    222,363.69x = 36,942,891,935.18
  5. Step 5: Solve for x
    x = 36,942,891,935.18/222,363.69
  6. Step 6: Final answer
    x = 166,137.25

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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.