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Finding the Fourth Proportional to 266,686.40, 400,029.60 and 166,959.20

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Solution

The fourth proportional to 266,686.40, 400,029.60 and 166,959.20 is: 250,438.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,686.40 : 400,029.60 = 166,959.20 : x
  2. Step 2: Convert to fraction form
    266,686.40/400,029.60 = 166,959.20/x
  3. Step 3: Cross multiply
    266,686.40x = 400,029.60 × 166,959.20
  4. Step 4: Simplify right side
    266,686.40x = 66,788,621,992.32
  5. Step 5: Solve for x
    x = 66,788,621,992.32/266,686.40
  6. Step 6: Final answer
    x = 250,438.80

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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.