Home / 280,831.92-421,027.56-140,682.48

Finding the Fourth Proportional to 280,831.92, 421,027.56 and 140,682.48

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Solution

The fourth proportional to 280,831.92, 421,027.56 and 140,682.48 is: 210,913.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,831.92 : 421,027.56 = 140,682.48 : x
  2. Step 2: Convert to fraction form
    280,831.92/421,027.56 = 140,682.48/x
  3. Step 3: Cross multiply
    280,831.92x = 421,027.56 × 140,682.48
  4. Step 4: Simplify right side
    280,831.92x = 59,231,201,289.15
  5. Step 5: Solve for x
    x = 59,231,201,289.15/280,831.92
  6. Step 6: Final answer
    x = 210,913.35

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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.