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Finding the Fourth Proportional to 223,840.92, 335,899.62 and 90,722.28

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Solution

The fourth proportional to 223,840.92, 335,899.62 and 90,722.28 is: 136,139.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,840.92 : 335,899.62 = 90,722.28 : x
  2. Step 2: Convert to fraction form
    223,840.92/335,899.62 = 90,722.28/x
  3. Step 3: Cross multiply
    223,840.92x = 335,899.62 × 90,722.28
  4. Step 4: Simplify right side
    223,840.92x = 30,473,579,377.53
  5. Step 5: Solve for x
    x = 30,473,579,377.53/223,840.92
  6. Step 6: Final answer
    x = 136,139.45

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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.