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Finding the Fourth Proportional to 271,244.80, 405,715.20 and 243,366.40

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Solution

The fourth proportional to 271,244.80, 405,715.20 and 243,366.40 is: 364,016.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,244.80 : 405,715.20 = 243,366.40 : x
  2. Step 2: Convert to fraction form
    271,244.80/405,715.20 = 243,366.40/x
  3. Step 3: Cross multiply
    271,244.80x = 405,715.20 × 243,366.40
  4. Step 4: Simplify right side
    271,244.80x = 98,737,447,649.28
  5. Step 5: Solve for x
    x = 98,737,447,649.28/271,244.80
  6. Step 6: Final answer
    x = 364,016.00

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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.