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Finding the Fourth Proportional to 615,067.20, 922,514.40 and 194,385.60

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Solution

The fourth proportional to 615,067.20, 922,514.40 and 194,385.60 is: 291,551.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,067.20 : 922,514.40 = 194,385.60 : x
  2. Step 2: Convert to fraction form
    615,067.20/922,514.40 = 194,385.60/x
  3. Step 3: Cross multiply
    615,067.20x = 922,514.40 × 194,385.60
  4. Step 4: Simplify right side
    615,067.20x = 179,323,515,152.64
  5. Step 5: Solve for x
    x = 179,323,515,152.64/615,067.20
  6. Step 6: Final answer
    x = 291,551.09

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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.