Home / 398,427,568.96-549,830,778.84-222,226,921.46

Finding the Fourth Proportional to 398,427,568.96, 549,830,778.84 and 222,226,921.46

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Solution

The fourth proportional to 398,427,568.96, 549,830,778.84 and 222,226,921.46 is: 306,673,560.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,427,568.96 : 549,830,778.84 = 222,226,921.46 : x
  2. Step 2: Convert to fraction form
    398,427,568.96/549,830,778.84 = 222,226,921.46/x
  3. Step 3: Cross multiply
    398,427,568.96x = 549,830,778.84 × 222,226,921.46
  4. Step 4: Simplify right side
    398,427,568.96x = 122,187,201,305,567,328
  5. Step 5: Solve for x
    x = 122,187,201,305,567,328/398,427,568.96
  6. Step 6: Final answer
    x = 306,673,560.83

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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.