Home / 216,923.28-299,351.07-121,429.86

Finding the Fourth Proportional to 216,923.28, 299,351.07 and 121,429.86

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Solution

The fourth proportional to 216,923.28, 299,351.07 and 121,429.86 is: 167,571.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,923.28 : 299,351.07 = 121,429.86 : x
  2. Step 2: Convert to fraction form
    216,923.28/299,351.07 = 121,429.86/x
  3. Step 3: Cross multiply
    216,923.28x = 299,351.07 × 121,429.86
  4. Step 4: Simplify right side
    216,923.28x = 36,350,158,520.95
  5. Step 5: Solve for x
    x = 36,350,158,520.95/216,923.28
  6. Step 6: Final answer
    x = 167,571.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.