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Finding the Fourth Proportional to 271,607.60, 407,411.40 and 266,358.80

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Solution

The fourth proportional to 271,607.60, 407,411.40 and 266,358.80 is: 399,538.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,607.60 : 407,411.40 = 266,358.80 : x
  2. Step 2: Convert to fraction form
    271,607.60/407,411.40 = 266,358.80/x
  3. Step 3: Cross multiply
    271,607.60x = 407,411.40 × 266,358.80
  4. Step 4: Simplify right side
    271,607.60x = 108,517,611,610.32
  5. Step 5: Solve for x
    x = 108,517,611,610.32/271,607.60
  6. Step 6: Final answer
    x = 399,538.20

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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.