Home / 216,570.92-324,638.30-90,281.08

Finding the Fourth Proportional to 216,570.92, 324,638.30 and 90,281.08

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Solution

The fourth proportional to 216,570.92, 324,638.30 and 90,281.08 is: 135,330.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,570.92 : 324,638.30 = 90,281.08 : x
  2. Step 2: Convert to fraction form
    216,570.92/324,638.30 = 90,281.08/x
  3. Step 3: Cross multiply
    216,570.92x = 324,638.30 × 90,281.08
  4. Step 4: Simplify right side
    216,570.92x = 29,308,696,333.36
  5. Step 5: Solve for x
    x = 29,308,696,333.36/216,570.92
  6. Step 6: Final answer
    x = 135,330.71

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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.