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Finding the Fourth Proportional to 222,392.76, 306,890.20 and 126,908.32

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Solution

The fourth proportional to 222,392.76, 306,890.20 and 126,908.32 is: 175,126.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,392.76 : 306,890.20 = 126,908.32 : x
  2. Step 2: Convert to fraction form
    222,392.76/306,890.20 = 126,908.32/x
  3. Step 3: Cross multiply
    222,392.76x = 306,890.20 × 126,908.32
  4. Step 4: Simplify right side
    222,392.76x = 38,946,919,706.46
  5. Step 5: Solve for x
    x = 38,946,919,706.46/222,392.76
  6. Step 6: Final answer
    x = 175,126.74

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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.