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Finding the Fourth Proportional to 422,891,345.88, 634,959,712.80 and 236,510,451.18

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Solution

The fourth proportional to 422,891,345.88, 634,959,712.80 and 236,510,451.18 is: 355,113,930.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,891,345.88 : 634,959,712.80 = 236,510,451.18 : x
  2. Step 2: Convert to fraction form
    422,891,345.88/634,959,712.80 = 236,510,451.18/x
  3. Step 3: Cross multiply
    422,891,345.88x = 634,959,712.80 × 236,510,451.18
  4. Step 4: Simplify right side
    422,891,345.88x = 150,174,608,155,451,200
  5. Step 5: Solve for x
    x = 150,174,608,155,451,200/422,891,345.88
  6. Step 6: Final answer
    x = 355,113,930.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.