Home / 290,430,131.18-400,781,919.18-158,268,310.86

Finding the Fourth Proportional to 290,430,131.18, 400,781,919.18 and 158,268,310.86

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Solution

The fourth proportional to 290,430,131.18, 400,781,919.18 and 158,268,310.86 is: 218,403,913.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,430,131.18 : 400,781,919.18 = 158,268,310.86 : x
  2. Step 2: Convert to fraction form
    290,430,131.18/400,781,919.18 = 158,268,310.86/x
  3. Step 3: Cross multiply
    290,430,131.18x = 400,781,919.18 × 158,268,310.86
  4. Step 4: Simplify right side
    290,430,131.18x = 63,431,077,373,056,192
  5. Step 5: Solve for x
    x = 63,431,077,373,056,192/290,430,131.18
  6. Step 6: Final answer
    x = 218,403,913.93

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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.