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Finding the Fourth Proportional to 317,222.40, 437,537.40 and 269,400

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Solution

The fourth proportional to 317,222.40, 437,537.40 and 269,400 is: 371,577.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,222.40 : 437,537.40 = 269,400 : x
  2. Step 2: Convert to fraction form
    317,222.40/437,537.40 = 269,400/x
  3. Step 3: Cross multiply
    317,222.40x = 437,537.40 × 269,400
  4. Step 4: Simplify right side
    317,222.40x = 117,872,575,560
  5. Step 5: Solve for x
    x = 117,872,575,560/317,222.40
  6. Step 6: Final answer
    x = 371,577.09

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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.