Home / 259,917.06-390,079.71-133,552.20

Finding the Fourth Proportional to 259,917.06, 390,079.71 and 133,552.20

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Solution

The fourth proportional to 259,917.06, 390,079.71 and 133,552.20 is: 200,433.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,917.06 : 390,079.71 = 133,552.20 : x
  2. Step 2: Convert to fraction form
    259,917.06/390,079.71 = 133,552.20/x
  3. Step 3: Cross multiply
    259,917.06x = 390,079.71 × 133,552.20
  4. Step 4: Simplify right side
    259,917.06x = 52,096,003,445.86
  5. Step 5: Solve for x
    x = 52,096,003,445.86/259,917.06
  6. Step 6: Final answer
    x = 200,433.18

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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.