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Finding the Fourth Proportional to 220,889.60, 304,831.12 and 120,287.52

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Solution

The fourth proportional to 220,889.60, 304,831.12 and 120,287.52 is: 165,998.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,889.60 : 304,831.12 = 120,287.52 : x
  2. Step 2: Convert to fraction form
    220,889.60/304,831.12 = 120,287.52/x
  3. Step 3: Cross multiply
    220,889.60x = 304,831.12 × 120,287.52
  4. Step 4: Simplify right side
    220,889.60x = 36,667,379,443.62
  5. Step 5: Solve for x
    x = 36,667,379,443.62/220,889.60
  6. Step 6: Final answer
    x = 165,998.67

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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.