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Finding the Fourth Proportional to 445,991.70, 615,468.86 and 242,042.56

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Solution

The fourth proportional to 445,991.70, 615,468.86 and 242,042.56 is: 334,018.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,991.70 : 615,468.86 = 242,042.56 : x
  2. Step 2: Convert to fraction form
    445,991.70/615,468.86 = 242,042.56/x
  3. Step 3: Cross multiply
    445,991.70x = 615,468.86 × 242,042.56
  4. Step 4: Simplify right side
    445,991.70x = 148,969,660,091.22
  5. Step 5: Solve for x
    x = 148,969,660,091.22/445,991.70
  6. Step 6: Final answer
    x = 334,018.91

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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.