Home / 280,831.68-421,352.73-145,811.48

Finding the Fourth Proportional to 280,831.68, 421,352.73 and 145,811.48

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Solution

The fourth proportional to 280,831.68, 421,352.73 and 145,811.48 is: 218,771.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,831.68 : 421,352.73 = 145,811.48 : x
  2. Step 2: Convert to fraction form
    280,831.68/421,352.73 = 145,811.48/x
  3. Step 3: Cross multiply
    280,831.68x = 421,352.73 × 145,811.48
  4. Step 4: Simplify right side
    280,831.68x = 61,438,063,056.58
  5. Step 5: Solve for x
    x = 61,438,063,056.58/280,831.68
  6. Step 6: Final answer
    x = 218,771.84

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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.