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Finding the Fourth Proportional to 266,422.60, 399,633.90 and 161,187.40

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Solution

The fourth proportional to 266,422.60, 399,633.90 and 161,187.40 is: 241,781.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,422.60 : 399,633.90 = 161,187.40 : x
  2. Step 2: Convert to fraction form
    266,422.60/399,633.90 = 161,187.40/x
  3. Step 3: Cross multiply
    266,422.60x = 399,633.90 × 161,187.40
  4. Step 4: Simplify right side
    266,422.60x = 64,415,949,292.86
  5. Step 5: Solve for x
    x = 64,415,949,292.86/266,422.60
  6. Step 6: Final answer
    x = 241,781.10

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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.