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Finding the Fourth Proportional to 266,340.90, 399,511.35 and 166,808.10

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Solution

The fourth proportional to 266,340.90, 399,511.35 and 166,808.10 is: 250,212.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,340.90 : 399,511.35 = 166,808.10 : x
  2. Step 2: Convert to fraction form
    266,340.90/399,511.35 = 166,808.10/x
  3. Step 3: Cross multiply
    266,340.90x = 399,511.35 × 166,808.10
  4. Step 4: Simplify right side
    266,340.90x = 66,641,729,221.94
  5. Step 5: Solve for x
    x = 66,641,729,221.94/266,340.90
  6. Step 6: Final answer
    x = 250,212.15

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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.