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Finding the Fourth Proportional to 281,840.11, 422,721.28 and 155,713.39

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Solution

The fourth proportional to 281,840.11, 422,721.28 and 155,713.39 is: 233,548.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,840.11 : 422,721.28 = 155,713.39 : x
  2. Step 2: Convert to fraction form
    281,840.11/422,721.28 = 155,713.39/x
  3. Step 3: Cross multiply
    281,840.11x = 422,721.28 × 155,713.39
  4. Step 4: Simplify right side
    281,840.11x = 65,823,363,533.94
  5. Step 5: Solve for x
    x = 65,823,363,533.94/281,840.11
  6. Step 6: Final answer
    x = 233,548.60

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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.