Home / 398,958,152.78-550,748,854.86-231,661,827.24

Finding the Fourth Proportional to 398,958,152.78, 550,748,854.86 and 231,661,827.24

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Solution

The fourth proportional to 398,958,152.78, 550,748,854.86 and 231,661,827.24 is: 319,801,676.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,958,152.78 : 550,748,854.86 = 231,661,827.24 : x
  2. Step 2: Convert to fraction form
    398,958,152.78/550,748,854.86 = 231,661,827.24/x
  3. Step 3: Cross multiply
    398,958,152.78x = 550,748,854.86 × 231,661,827.24
  4. Step 4: Simplify right side
    398,958,152.78x = 127,587,486,067,205,168
  5. Step 5: Solve for x
    x = 127,587,486,067,205,168/398,958,152.78
  6. Step 6: Final answer
    x = 319,801,676.39

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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.