Home / 216,443.24-324,490.02-90,178.58

Finding the Fourth Proportional to 216,443.24, 324,490.02 and 90,178.58

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Solution

The fourth proportional to 216,443.24, 324,490.02 and 90,178.58 is: 135,195.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,443.24 : 324,490.02 = 90,178.58 : x
  2. Step 2: Convert to fraction form
    216,443.24/324,490.02 = 90,178.58/x
  3. Step 3: Cross multiply
    216,443.24x = 324,490.02 × 90,178.58
  4. Step 4: Simplify right side
    216,443.24x = 29,262,049,227.77
  5. Step 5: Solve for x
    x = 29,262,049,227.77/216,443.24
  6. Step 6: Final answer
    x = 135,195.02

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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.