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Finding the Fourth Proportional to 222,505.40, 306,981.92 and 125,695.12

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Solution

The fourth proportional to 222,505.40, 306,981.92 and 125,695.12 is: 173,416.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,505.40 : 306,981.92 = 125,695.12 : x
  2. Step 2: Convert to fraction form
    222,505.40/306,981.92 = 125,695.12/x
  3. Step 3: Cross multiply
    222,505.40x = 306,981.92 × 125,695.12
  4. Step 4: Simplify right side
    222,505.40x = 38,586,129,272.23
  5. Step 5: Solve for x
    x = 38,586,129,272.23/222,505.40
  6. Step 6: Final answer
    x = 173,416.60

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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.