Home / 279,278,155.98-385,403,853.72-161,871,587.34

Finding the Fourth Proportional to 279,278,155.98, 385,403,853.72 and 161,871,587.34

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Solution

The fourth proportional to 279,278,155.98, 385,403,853.72 and 161,871,587.34 is: 223,382,789.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,278,155.98 : 385,403,853.72 = 161,871,587.34 : x
  2. Step 2: Convert to fraction form
    279,278,155.98/385,403,853.72 = 161,871,587.34/x
  3. Step 3: Cross multiply
    279,278,155.98x = 385,403,853.72 × 161,871,587.34
  4. Step 4: Simplify right side
    279,278,155.98x = 62,385,933,568,609,568
  5. Step 5: Solve for x
    x = 62,385,933,568,609,568/279,278,155.98
  6. Step 6: Final answer
    x = 223,382,789.64

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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.