Home / 280,831.20-421,246.80-123,367.20

Finding the Fourth Proportional to 280,831.20, 421,246.80 and 123,367.20

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Solution

The fourth proportional to 280,831.20, 421,246.80 and 123,367.20 is: 185,050.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,831.20 : 421,246.80 = 123,367.20 : x
  2. Step 2: Convert to fraction form
    280,831.20/421,246.80 = 123,367.20/x
  3. Step 3: Cross multiply
    280,831.20x = 421,246.80 × 123,367.20
  4. Step 4: Simplify right side
    280,831.20x = 51,968,038,224.96
  5. Step 5: Solve for x
    x = 51,968,038,224.96/280,831.20
  6. Step 6: Final answer
    x = 185,050.80

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1.5x scale

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.