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Finding the Fourth Proportional to 220,656.63, 330,985.08 and 154,226.46

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Solution

The fourth proportional to 220,656.63, 330,985.08 and 154,226.46 is: 231,339.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,656.63 : 330,985.08 = 154,226.46 : x
  2. Step 2: Convert to fraction form
    220,656.63/330,985.08 = 154,226.46/x
  3. Step 3: Cross multiply
    220,656.63x = 330,985.08 × 154,226.46
  4. Step 4: Simplify right side
    220,656.63x = 51,046,657,201.22
  5. Step 5: Solve for x
    x = 51,046,657,201.22/220,656.63
  6. Step 6: Final answer
    x = 231,339.78

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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.