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Finding the Fourth Proportional to 278,847.77, 384,808.90 and 158,012.06

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Solution

The fourth proportional to 278,847.77, 384,808.90 and 158,012.06 is: 218,056.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,847.77 : 384,808.90 = 158,012.06 : x
  2. Step 2: Convert to fraction form
    278,847.77/384,808.90 = 158,012.06/x
  3. Step 3: Cross multiply
    278,847.77x = 384,808.90 × 158,012.06
  4. Step 4: Simplify right side
    278,847.77x = 60,804,446,995.33
  5. Step 5: Solve for x
    x = 60,804,446,995.33/278,847.77
  6. Step 6: Final answer
    x = 218,056.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.