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Finding the Fourth Proportional to 226,943.40, 340,415.10 and 215,279.40

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Solution

The fourth proportional to 226,943.40, 340,415.10 and 215,279.40 is: 322,919.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,943.40 : 340,415.10 = 215,279.40 : x
  2. Step 2: Convert to fraction form
    226,943.40/340,415.10 = 215,279.40/x
  3. Step 3: Cross multiply
    226,943.40x = 340,415.10 × 215,279.40
  4. Step 4: Simplify right side
    226,943.40x = 73,284,358,478.94
  5. Step 5: Solve for x
    x = 73,284,358,478.94/226,943.40
  6. Step 6: Final answer
    x = 322,919.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.