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Finding the Fourth Proportional to 278,704.83, 418,054.94 and 165,636.25

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Solution

The fourth proportional to 278,704.83, 418,054.94 and 165,636.25 is: 248,453.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,704.83 : 418,054.94 = 165,636.25 : x
  2. Step 2: Convert to fraction form
    278,704.83/418,054.94 = 165,636.25/x
  3. Step 3: Cross multiply
    278,704.83x = 418,054.94 × 165,636.25
  4. Step 4: Simplify right side
    278,704.83x = 69,245,049,637.12
  5. Step 5: Solve for x
    x = 69,245,049,637.12/278,704.83
  6. Step 6: Final answer
    x = 248,453.00

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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.