Home / 278,989.10-385,003.35-158,153.18

Finding the Fourth Proportional to 278,989.10, 385,003.35 and 158,153.18

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Solution

The fourth proportional to 278,989.10, 385,003.35 and 158,153.18 is: 218,250.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,989.10 : 385,003.35 = 158,153.18 : x
  2. Step 2: Convert to fraction form
    278,989.10/385,003.35 = 158,153.18/x
  3. Step 3: Cross multiply
    278,989.10x = 385,003.35 × 158,153.18
  4. Step 4: Simplify right side
    278,989.10x = 60,889,504,113.15
  5. Step 5: Solve for x
    x = 60,889,504,113.15/278,989.10
  6. Step 6: Final answer
    x = 218,250.48

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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.