Home / 278,998.29-385,047.74-158,126.60

Finding the Fourth Proportional to 278,998.29, 385,047.74 and 158,126.60

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Solution

The fourth proportional to 278,998.29, 385,047.74 and 158,126.60 is: 218,231.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,998.29 : 385,047.74 = 158,126.60 : x
  2. Step 2: Convert to fraction form
    278,998.29/385,047.74 = 158,126.60/x
  3. Step 3: Cross multiply
    278,998.29x = 385,047.74 × 158,126.60
  4. Step 4: Simplify right side
    278,998.29x = 60,886,289,155.93
  5. Step 5: Solve for x
    x = 60,886,289,155.93/278,998.29
  6. Step 6: Final answer
    x = 218,231.76

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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.