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Finding the Fourth Proportional to 271,501.80, 407,511.90 and 138,532.20

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Solution

The fourth proportional to 271,501.80, 407,511.90 and 138,532.20 is: 207,930.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,501.80 : 407,511.90 = 138,532.20 : x
  2. Step 2: Convert to fraction form
    271,501.80/407,511.90 = 138,532.20/x
  3. Step 3: Cross multiply
    271,501.80x = 407,511.90 × 138,532.20
  4. Step 4: Simplify right side
    271,501.80x = 56,453,520,033.18
  5. Step 5: Solve for x
    x = 56,453,520,033.18/271,501.80
  6. Step 6: Final answer
    x = 207,930.56

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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.