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Finding the Fourth Proportional to 317,255.36, 437,892 and 215,453.12

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Solution

The fourth proportional to 317,255.36, 437,892 and 215,453.12 is: 297,379.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,255.36 : 437,892 = 215,453.12 : x
  2. Step 2: Convert to fraction form
    317,255.36/437,892 = 215,453.12/x
  3. Step 3: Cross multiply
    317,255.36x = 437,892 × 215,453.12
  4. Step 4: Simplify right side
    317,255.36x = 94,345,197,623.04
  5. Step 5: Solve for x
    x = 94,345,197,623.04/317,255.36
  6. Step 6: Final answer
    x = 297,379.37

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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.