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Finding the Fourth Proportional to 278,637.74, 418,104.23 and 120,976.91

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Solution

The fourth proportional to 278,637.74, 418,104.23 and 120,976.91 is: 181,529.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,637.74 : 418,104.23 = 120,976.91 : x
  2. Step 2: Convert to fraction form
    278,637.74/418,104.23 = 120,976.91/x
  3. Step 3: Cross multiply
    278,637.74x = 418,104.23 × 120,976.91
  4. Step 4: Simplify right side
    278,637.74x = 50,580,955,107.92
  5. Step 5: Solve for x
    x = 50,580,955,107.92/278,637.74
  6. Step 6: Final answer
    x = 181,529.45

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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.