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Finding the Fourth Proportional to 218,086.71, 300,955.74 and 133,203.78

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Solution

The fourth proportional to 218,086.71, 300,955.74 and 133,203.78 is: 183,818.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,086.71 : 300,955.74 = 133,203.78 : x
  2. Step 2: Convert to fraction form
    218,086.71/300,955.74 = 133,203.78/x
  3. Step 3: Cross multiply
    218,086.71x = 300,955.74 × 133,203.78
  4. Step 4: Simplify right side
    218,086.71x = 40,088,442,180.70
  5. Step 5: Solve for x
    x = 40,088,442,180.70/218,086.71
  6. Step 6: Final answer
    x = 183,818.82

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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.