Home / 288,981.92-398,835.24-161,666.12

Finding the Fourth Proportional to 288,981.92, 398,835.24 and 161,666.12

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Solution

The fourth proportional to 288,981.92, 398,835.24 and 161,666.12 is: 223,121.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,981.92 : 398,835.24 = 161,666.12 : x
  2. Step 2: Convert to fraction form
    288,981.92/398,835.24 = 161,666.12/x
  3. Step 3: Cross multiply
    288,981.92x = 398,835.24 × 161,666.12
  4. Step 4: Simplify right side
    288,981.92x = 64,478,145,770.07
  5. Step 5: Solve for x
    x = 64,478,145,770.07/288,981.92
  6. Step 6: Final answer
    x = 223,121.73

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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.