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Finding the Fourth Proportional to 278,713.06, 418,069.44 and 79,035.16

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Solution

The fourth proportional to 278,713.06, 418,069.44 and 79,035.16 is: 118,552.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,713.06 : 418,069.44 = 79,035.16 : x
  2. Step 2: Convert to fraction form
    278,713.06/418,069.44 = 79,035.16/x
  3. Step 3: Cross multiply
    278,713.06x = 418,069.44 × 79,035.16
  4. Step 4: Simplify right side
    278,713.06x = 33,042,185,081.51
  5. Step 5: Solve for x
    x = 33,042,185,081.51/278,713.06
  6. Step 6: Final answer
    x = 118,552.70

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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.