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Finding the Fourth Proportional to 278,863.49, 384,832.01 and 158,012.98

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Solution

The fourth proportional to 278,863.49, 384,832.01 and 158,012.98 is: 218,058.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,863.49 : 384,832.01 = 158,012.98 : x
  2. Step 2: Convert to fraction form
    278,863.49/384,832.01 = 158,012.98/x
  3. Step 3: Cross multiply
    278,863.49x = 384,832.01 × 158,012.98
  4. Step 4: Simplify right side
    278,863.49x = 60,808,452,132.44
  5. Step 5: Solve for x
    x = 60,808,452,132.44/278,863.49
  6. Step 6: Final answer
    x = 218,058.13

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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.