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Finding the Fourth Proportional to 489,171.60, 733,757.40 and 355,327.20

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Solution

The fourth proportional to 489,171.60, 733,757.40 and 355,327.20 is: 532,990.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,171.60 : 733,757.40 = 355,327.20 : x
  2. Step 2: Convert to fraction form
    489,171.60/733,757.40 = 355,327.20/x
  3. Step 3: Cross multiply
    489,171.60x = 733,757.40 × 355,327.20
  4. Step 4: Simplify right side
    489,171.60x = 260,723,962,421.28
  5. Step 5: Solve for x
    x = 260,723,962,421.28/489,171.60
  6. Step 6: Final answer
    x = 532,990.80

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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.