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Finding the Fourth Proportional to 405,659.52, 608,576.22 and 121,372.20

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Solution

The fourth proportional to 405,659.52, 608,576.22 and 121,372.20 is: 182,084.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,659.52 : 608,576.22 = 121,372.20 : x
  2. Step 2: Convert to fraction form
    405,659.52/608,576.22 = 121,372.20/x
  3. Step 3: Cross multiply
    405,659.52x = 608,576.22 × 121,372.20
  4. Step 4: Simplify right side
    405,659.52x = 73,864,234,689.08
  5. Step 5: Solve for x
    x = 73,864,234,689.08/405,659.52
  6. Step 6: Final answer
    x = 182,084.31

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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.