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Finding the Fourth Proportional to 322,483.56, 445,148.07 and 242,143.20

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Solution

The fourth proportional to 322,483.56, 445,148.07 and 242,143.20 is: 334,248.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,483.56 : 445,148.07 = 242,143.20 : x
  2. Step 2: Convert to fraction form
    322,483.56/445,148.07 = 242,143.20/x
  3. Step 3: Cross multiply
    322,483.56x = 445,148.07 × 242,143.20
  4. Step 4: Simplify right side
    322,483.56x = 107,789,578,143.62
  5. Step 5: Solve for x
    x = 107,789,578,143.62/322,483.56
  6. Step 6: Final answer
    x = 334,248.29

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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.