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Finding the Fourth Proportional to 218,097.50, 300,979.42 and 133,261.34

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Solution

The fourth proportional to 218,097.50, 300,979.42 and 133,261.34 is: 183,903.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,097.50 : 300,979.42 = 133,261.34 : x
  2. Step 2: Convert to fraction form
    218,097.50/300,979.42 = 133,261.34/x
  3. Step 3: Cross multiply
    218,097.50x = 300,979.42 × 133,261.34
  4. Step 4: Simplify right side
    218,097.50x = 40,108,920,821.62
  5. Step 5: Solve for x
    x = 40,108,920,821.62/218,097.50
  6. Step 6: Final answer
    x = 183,903.62

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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.