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Finding the Fourth Proportional to 217,321.89, 300,002.40 and 136,867.62

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Solution

The fourth proportional to 217,321.89, 300,002.40 and 136,867.62 is: 188,939.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,321.89 : 300,002.40 = 136,867.62 : x
  2. Step 2: Convert to fraction form
    217,321.89/300,002.40 = 136,867.62/x
  3. Step 3: Cross multiply
    217,321.89x = 300,002.40 × 136,867.62
  4. Step 4: Simplify right side
    217,321.89x = 41,060,614,482.29
  5. Step 5: Solve for x
    x = 41,060,614,482.29/217,321.89
  6. Step 6: Final answer
    x = 188,939.16

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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.