Home / 284,831.20-427,209.72-74,485.36

Finding the Fourth Proportional to 284,831.20, 427,209.72 and 74,485.36

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Solution

The fourth proportional to 284,831.20, 427,209.72 and 74,485.36 is: 111,718.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,831.20 : 427,209.72 = 74,485.36 : x
  2. Step 2: Convert to fraction form
    284,831.20/427,209.72 = 74,485.36/x
  3. Step 3: Cross multiply
    284,831.20x = 427,209.72 × 74,485.36
  4. Step 4: Simplify right side
    284,831.20x = 31,820,869,789.70
  5. Step 5: Solve for x
    x = 31,820,869,789.70/284,831.20
  6. Step 6: Final answer
    x = 111,718.34

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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.