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Finding the Fourth Proportional to 445,908.38, 668,932.22 and 146,320.83

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Solution

The fourth proportional to 445,908.38, 668,932.22 and 146,320.83 is: 219,504.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,908.38 : 668,932.22 = 146,320.83 : x
  2. Step 2: Convert to fraction form
    445,908.38/668,932.22 = 146,320.83/x
  3. Step 3: Cross multiply
    445,908.38x = 668,932.22 × 146,320.83
  4. Step 4: Simplify right side
    445,908.38x = 97,878,718,009.94
  5. Step 5: Solve for x
    x = 97,878,718,009.94/445,908.38
  6. Step 6: Final answer
    x = 219,504.10

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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.