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Finding the Fourth Proportional to 489,131.60, 733,697.40 and 355,287.20

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Solution

The fourth proportional to 489,131.60, 733,697.40 and 355,287.20 is: 532,930.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,131.60 : 733,697.40 = 355,287.20 : x
  2. Step 2: Convert to fraction form
    489,131.60/733,697.40 = 355,287.20/x
  3. Step 3: Cross multiply
    489,131.60x = 733,697.40 × 355,287.20
  4. Step 4: Simplify right side
    489,131.60x = 260,673,294,893.28
  5. Step 5: Solve for x
    x = 260,673,294,893.28/489,131.60
  6. Step 6: Final answer
    x = 532,930.80

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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.