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Finding the Fourth Proportional to 222,435, 306,960.30 and 121,835.16

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Solution

The fourth proportional to 222,435, 306,960.30 and 121,835.16 is: 168,132.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,435 : 306,960.30 = 121,835.16 : x
  2. Step 2: Convert to fraction form
    222,435/306,960.30 = 121,835.16/x
  3. Step 3: Cross multiply
    222,435x = 306,960.30 × 121,835.16
  4. Step 4: Simplify right side
    222,435x = 37,398,557,264.15
  5. Step 5: Solve for x
    x = 37,398,557,264.15/222,435
  6. Step 6: Final answer
    x = 168,132.52

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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.