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Finding the Fourth Proportional to 266,740.60, 400,110.90 and 172,262.20

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Solution

The fourth proportional to 266,740.60, 400,110.90 and 172,262.20 is: 258,393.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,740.60 : 400,110.90 = 172,262.20 : x
  2. Step 2: Convert to fraction form
    266,740.60/400,110.90 = 172,262.20/x
  3. Step 3: Cross multiply
    266,740.60x = 400,110.90 × 172,262.20
  4. Step 4: Simplify right side
    266,740.60x = 68,923,983,877.98
  5. Step 5: Solve for x
    x = 68,923,983,877.98/266,740.60
  6. Step 6: Final answer
    x = 258,393.30

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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.