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Finding the Fourth Proportional to 217,422.10, 304,943.90 and 217,422.10

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Solution

The fourth proportional to 217,422.10, 304,943.90 and 217,422.10 is: 304,943.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,422.10 : 304,943.90 = 217,422.10 : x
  2. Step 2: Convert to fraction form
    217,422.10/304,943.90 = 217,422.10/x
  3. Step 3: Cross multiply
    217,422.10x = 304,943.90 × 217,422.10
  4. Step 4: Simplify right side
    217,422.10x = 66,301,543,120.19
  5. Step 5: Solve for x
    x = 66,301,543,120.19/217,422.10
  6. Step 6: Final answer
    x = 304,943.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.