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Finding the Fourth Proportional to 424,203.42, 636,290.37 and 108,663.06

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Solution

The fourth proportional to 424,203.42, 636,290.37 and 108,663.06 is: 162,990.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,203.42 : 636,290.37 = 108,663.06 : x
  2. Step 2: Convert to fraction form
    424,203.42/636,290.37 = 108,663.06/x
  3. Step 3: Cross multiply
    424,203.42x = 636,290.37 × 108,663.06
  4. Step 4: Simplify right side
    424,203.42x = 69,141,258,652.73
  5. Step 5: Solve for x
    x = 69,141,258,652.73/424,203.42
  6. Step 6: Final answer
    x = 162,990.81

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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.