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Finding the Fourth Proportional to 489,132.60, 733,698.90 and 355,288.20

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Solution

The fourth proportional to 489,132.60, 733,698.90 and 355,288.20 is: 532,932.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,132.60 : 733,698.90 = 355,288.20 : x
  2. Step 2: Convert to fraction form
    489,132.60/733,698.90 = 355,288.20/x
  3. Step 3: Cross multiply
    489,132.60x = 733,698.90 × 355,288.20
  4. Step 4: Simplify right side
    489,132.60x = 260,674,561,522.98
  5. Step 5: Solve for x
    x = 260,674,561,522.98/489,132.60
  6. Step 6: Final answer
    x = 532,932.30

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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.