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Finding the Fourth Proportional to 272,298.60, 408,520.80 and 242,919.90

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Solution

The fourth proportional to 272,298.60, 408,520.80 and 242,919.90 is: 364,444.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,298.60 : 408,520.80 = 242,919.90 : x
  2. Step 2: Convert to fraction form
    272,298.60/408,520.80 = 242,919.90/x
  3. Step 3: Cross multiply
    272,298.60x = 408,520.80 × 242,919.90
  4. Step 4: Simplify right side
    272,298.60x = 99,237,831,883.92
  5. Step 5: Solve for x
    x = 99,237,831,883.92/272,298.60
  6. Step 6: Final answer
    x = 364,444.88

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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.