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Finding the Fourth Proportional to 437,640, 603,943.20 and 236,436

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Solution

The fourth proportional to 437,640, 603,943.20 and 236,436 is: 326,281.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,640 : 603,943.20 = 236,436 : x
  2. Step 2: Convert to fraction form
    437,640/603,943.20 = 236,436/x
  3. Step 3: Cross multiply
    437,640x = 603,943.20 × 236,436
  4. Step 4: Simplify right side
    437,640x = 142,793,914,435.20
  5. Step 5: Solve for x
    x = 142,793,914,435.20/437,640
  6. Step 6: Final answer
    x = 326,281.68

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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.