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Finding the Fourth Proportional to 278,317.44, 418,051.14 and 266,188.69

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Solution

The fourth proportional to 278,317.44, 418,051.14 and 266,188.69 is: 399,832.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,317.44 : 418,051.14 = 266,188.69 : x
  2. Step 2: Convert to fraction form
    278,317.44/418,051.14 = 266,188.69/x
  3. Step 3: Cross multiply
    278,317.44x = 418,051.14 × 266,188.69
  4. Step 4: Simplify right side
    278,317.44x = 111,280,485,309.61
  5. Step 5: Solve for x
    x = 111,280,485,309.61/278,317.44
  6. Step 6: Final answer
    x = 399,832.96

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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.