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Finding the Fourth Proportional to 347,762.80, 521,644.20 and 268,933.60

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Solution

The fourth proportional to 347,762.80, 521,644.20 and 268,933.60 is: 403,400.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,762.80 : 521,644.20 = 268,933.60 : x
  2. Step 2: Convert to fraction form
    347,762.80/521,644.20 = 268,933.60/x
  3. Step 3: Cross multiply
    347,762.80x = 521,644.20 × 268,933.60
  4. Step 4: Simplify right side
    347,762.80x = 140,287,652,625.12
  5. Step 5: Solve for x
    x = 140,287,652,625.12/347,762.80
  6. Step 6: Final answer
    x = 403,400.40

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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.