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Finding the Fourth Proportional to 408,438.94, 563,562.48 and 238,640.26

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Solution

The fourth proportional to 408,438.94, 563,562.48 and 238,640.26 is: 329,274.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,438.94 : 563,562.48 = 238,640.26 : x
  2. Step 2: Convert to fraction form
    408,438.94/563,562.48 = 238,640.26/x
  3. Step 3: Cross multiply
    408,438.94x = 563,562.48 × 238,640.26
  4. Step 4: Simplify right side
    408,438.94x = 134,488,696,753.45
  5. Step 5: Solve for x
    x = 134,488,696,753.45/408,438.94
  6. Step 6: Final answer
    x = 329,274.91

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1.5x scale

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.