Home / 216,869.10-325,287.45-90,476.70

Finding the Fourth Proportional to 216,869.10, 325,287.45 and 90,476.70

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Solution

The fourth proportional to 216,869.10, 325,287.45 and 90,476.70 is: 135,708.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,869.10 : 325,287.45 = 90,476.70 : x
  2. Step 2: Convert to fraction form
    216,869.10/325,287.45 = 90,476.70/x
  3. Step 3: Cross multiply
    216,869.10x = 325,287.45 × 90,476.70
  4. Step 4: Simplify right side
    216,869.10x = 29,430,935,027.42
  5. Step 5: Solve for x
    x = 29,430,935,027.42/216,869.10
  6. Step 6: Final answer
    x = 135,708.29

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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.