Home / 427,257.80-640,831.02-111,739.04

Finding the Fourth Proportional to 427,257.80, 640,831.02 and 111,739.04

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Solution

The fourth proportional to 427,257.80, 640,831.02 and 111,739.04 is: 167,594.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,257.80 : 640,831.02 = 111,739.04 : x
  2. Step 2: Convert to fraction form
    427,257.80/640,831.02 = 111,739.04/x
  3. Step 3: Cross multiply
    427,257.80x = 640,831.02 × 111,739.04
  4. Step 4: Simplify right side
    427,257.80x = 71,605,842,977.02
  5. Step 5: Solve for x
    x = 71,605,842,977.02/427,257.80
  6. Step 6: Final answer
    x = 167,594.00

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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.