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Finding the Fourth Proportional to 271,284.80, 406,927.20 and 138,574.40

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Solution

The fourth proportional to 271,284.80, 406,927.20 and 138,574.40 is: 207,861.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,284.80 : 406,927.20 = 138,574.40 : x
  2. Step 2: Convert to fraction form
    271,284.80/406,927.20 = 138,574.40/x
  3. Step 3: Cross multiply
    271,284.80x = 406,927.20 × 138,574.40
  4. Step 4: Simplify right side
    271,284.80x = 56,389,692,583.68
  5. Step 5: Solve for x
    x = 56,389,692,583.68/271,284.80
  6. Step 6: Final answer
    x = 207,861.60

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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.