Home / 398,427,565.21-549,830,773.67-222,226,917.70

Finding the Fourth Proportional to 398,427,565.21, 549,830,773.67 and 222,226,917.70

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Solution

The fourth proportional to 398,427,565.21, 549,830,773.67 and 222,226,917.70 is: 306,673,555.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,427,565.21 : 549,830,773.67 = 222,226,917.70 : x
  2. Step 2: Convert to fraction form
    398,427,565.21/549,830,773.67 = 222,226,917.70/x
  3. Step 3: Cross multiply
    398,427,565.21x = 549,830,773.67 × 222,226,917.70
  4. Step 4: Simplify right side
    398,427,565.21x = 122,187,198,089,290,400
  5. Step 5: Solve for x
    x = 122,187,198,089,290,400/398,427,565.21
  6. Step 6: Final answer
    x = 306,673,555.64

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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.