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Finding the Fourth Proportional to 222,312.12, 306,787.68 and 121,710.12

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Solution

The fourth proportional to 222,312.12, 306,787.68 and 121,710.12 is: 167,958.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,312.12 : 306,787.68 = 121,710.12 : x
  2. Step 2: Convert to fraction form
    222,312.12/306,787.68 = 121,710.12/x
  3. Step 3: Cross multiply
    222,312.12x = 306,787.68 × 121,710.12
  4. Step 4: Simplify right side
    222,312.12x = 37,339,165,347.32
  5. Step 5: Solve for x
    x = 37,339,165,347.32/222,312.12
  6. Step 6: Final answer
    x = 167,958.30

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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.