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Finding the Fourth Proportional to 220,365.96, 330,551.10 and 87,278.64

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Solution

The fourth proportional to 220,365.96, 330,551.10 and 87,278.64 is: 130,918.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,365.96 : 330,551.10 = 87,278.64 : x
  2. Step 2: Convert to fraction form
    220,365.96/330,551.10 = 87,278.64/x
  3. Step 3: Cross multiply
    220,365.96x = 330,551.10 × 87,278.64
  4. Step 4: Simplify right side
    220,365.96x = 28,850,050,458.50
  5. Step 5: Solve for x
    x = 28,850,050,458.50/220,365.96
  6. Step 6: Final answer
    x = 130,918.82

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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.