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Finding the Fourth Proportional to 347,455.20, 521,182.80 and 236,863.20

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Solution

The fourth proportional to 347,455.20, 521,182.80 and 236,863.20 is: 355,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,455.20 : 521,182.80 = 236,863.20 : x
  2. Step 2: Convert to fraction form
    347,455.20/521,182.80 = 236,863.20/x
  3. Step 3: Cross multiply
    347,455.20x = 521,182.80 × 236,863.20
  4. Step 4: Simplify right side
    347,455.20x = 123,449,025,792.96
  5. Step 5: Solve for x
    x = 123,449,025,792.96/347,455.20
  6. Step 6: Final answer
    x = 355,294.80

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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.