Home / 216,538.20-298,817.24-121,053.78

Finding the Fourth Proportional to 216,538.20, 298,817.24 and 121,053.78

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Solution

The fourth proportional to 216,538.20, 298,817.24 and 121,053.78 is: 167,051.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,538.20 : 298,817.24 = 121,053.78 : x
  2. Step 2: Convert to fraction form
    216,538.20/298,817.24 = 121,053.78/x
  3. Step 3: Cross multiply
    216,538.20x = 298,817.24 × 121,053.78
  4. Step 4: Simplify right side
    216,538.20x = 36,172,955,825.90
  5. Step 5: Solve for x
    x = 36,172,955,825.90/216,538.20
  6. Step 6: Final answer
    x = 167,051.15

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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.