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Finding the Fourth Proportional to 271,483.40, 408,099.90 and 193,140.20

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Solution

The fourth proportional to 271,483.40, 408,099.90 and 193,140.20 is: 290,332.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,483.40 : 408,099.90 = 193,140.20 : x
  2. Step 2: Convert to fraction form
    271,483.40/408,099.90 = 193,140.20/x
  3. Step 3: Cross multiply
    271,483.40x = 408,099.90 × 193,140.20
  4. Step 4: Simplify right side
    271,483.40x = 78,820,496,305.98
  5. Step 5: Solve for x
    x = 78,820,496,305.98/271,483.40
  6. Step 6: Final answer
    x = 290,332.65

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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.