Home / 221,833.28-306,130.02-121,231.28

Finding the Fourth Proportional to 221,833.28, 306,130.02 and 121,231.28

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Solution

The fourth proportional to 221,833.28, 306,130.02 and 121,231.28 is: 167,299.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,833.28 : 306,130.02 = 121,231.28 : x
  2. Step 2: Convert to fraction form
    221,833.28/306,130.02 = 121,231.28/x
  3. Step 3: Cross multiply
    221,833.28x = 306,130.02 × 121,231.28
  4. Step 4: Simplify right side
    221,833.28x = 37,112,534,171.03
  5. Step 5: Solve for x
    x = 37,112,534,171.03/221,833.28
  6. Step 6: Final answer
    x = 167,299.22

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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.