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Finding the Fourth Proportional to 279,366.77, 418,976.35 and 79,698.53

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Solution

The fourth proportional to 279,366.77, 418,976.35 and 79,698.53 is: 119,526.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,366.77 : 418,976.35 = 79,698.53 : x
  2. Step 2: Convert to fraction form
    279,366.77/418,976.35 = 79,698.53/x
  3. Step 3: Cross multiply
    279,366.77x = 418,976.35 × 79,698.53
  4. Step 4: Simplify right side
    279,366.77x = 33,391,800,047.96
  5. Step 5: Solve for x
    x = 33,391,800,047.96/279,366.77
  6. Step 6: Final answer
    x = 119,526.74

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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.