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Finding the Fourth Proportional to 220,392.87, 330,577.01 and 87,286.59

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Solution

The fourth proportional to 220,392.87, 330,577.01 and 87,286.59 is: 130,925.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,392.87 : 330,577.01 = 87,286.59 : x
  2. Step 2: Convert to fraction form
    220,392.87/330,577.01 = 87,286.59/x
  3. Step 3: Cross multiply
    220,392.87x = 330,577.01 × 87,286.59
  4. Step 4: Simplify right side
    220,392.87x = 28,854,939,019.19
  5. Step 5: Solve for x
    x = 28,854,939,019.19/220,392.87
  6. Step 6: Final answer
    x = 130,925.01

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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.