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Finding the Fourth Proportional to 408,076.20, 612,114.30 and 242,188.20

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Solution

The fourth proportional to 408,076.20, 612,114.30 and 242,188.20 is: 363,282.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,076.20 : 612,114.30 = 242,188.20 : x
  2. Step 2: Convert to fraction form
    408,076.20/612,114.30 = 242,188.20/x
  3. Step 3: Cross multiply
    408,076.20x = 612,114.30 × 242,188.20
  4. Step 4: Simplify right side
    408,076.20x = 148,246,860,511.26
  5. Step 5: Solve for x
    x = 148,246,860,511.26/408,076.20
  6. Step 6: Final answer
    x = 363,282.30

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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.