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Finding the Fourth Proportional to 220,609.32, 304,443.90 and 120,007.32

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Solution

The fourth proportional to 220,609.32, 304,443.90 and 120,007.32 is: 165,611.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,609.32 : 304,443.90 = 120,007.32 : x
  2. Step 2: Convert to fraction form
    220,609.32/304,443.90 = 120,007.32/x
  3. Step 3: Cross multiply
    220,609.32x = 304,443.90 × 120,007.32
  4. Step 4: Simplify right side
    220,609.32x = 36,535,496,529.35
  5. Step 5: Solve for x
    x = 36,535,496,529.35/220,609.32
  6. Step 6: Final answer
    x = 165,611.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.