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Finding the Fourth Proportional to 401,443.62, 602,166.44 and 135,391.02

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Solution

The fourth proportional to 401,443.62, 602,166.44 and 135,391.02 is: 203,086.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,443.62 : 602,166.44 = 135,391.02 : x
  2. Step 2: Convert to fraction form
    401,443.62/602,166.44 = 135,391.02/x
  3. Step 3: Cross multiply
    401,443.62x = 602,166.44 × 135,391.02
  4. Step 4: Simplify right side
    401,443.62x = 81,527,928,521.37
  5. Step 5: Solve for x
    x = 81,527,928,521.37/401,443.62
  6. Step 6: Final answer
    x = 203,086.87

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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.