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Finding the Fourth Proportional to 266,188.60, 399,282.90 and 133,089.40

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Solution

The fourth proportional to 266,188.60, 399,282.90 and 133,089.40 is: 199,634.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,188.60 : 399,282.90 = 133,089.40 : x
  2. Step 2: Convert to fraction form
    266,188.60/399,282.90 = 133,089.40/x
  3. Step 3: Cross multiply
    266,188.60x = 399,282.90 × 133,089.40
  4. Step 4: Simplify right side
    266,188.60x = 53,140,321,591.26
  5. Step 5: Solve for x
    x = 53,140,321,591.26/266,188.60
  6. Step 6: Final answer
    x = 199,634.10

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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.