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Finding the Fourth Proportional to 442,352.80, 664,220.40 and 255,728.80

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Solution

The fourth proportional to 442,352.80, 664,220.40 and 255,728.80 is: 383,992.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,352.80 : 664,220.40 = 255,728.80 : x
  2. Step 2: Convert to fraction form
    442,352.80/664,220.40 = 255,728.80/x
  3. Step 3: Cross multiply
    442,352.80x = 664,220.40 × 255,728.80
  4. Step 4: Simplify right side
    442,352.80x = 169,860,285,827.52
  5. Step 5: Solve for x
    x = 169,860,285,827.52/442,352.80
  6. Step 6: Final answer
    x = 383,992.79

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1.5x scale

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.