Home / 217,830.29-326,765.61-84,720.56

Finding the Fourth Proportional to 217,830.29, 326,765.61 and 84,720.56

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Solution

The fourth proportional to 217,830.29, 326,765.61 and 84,720.56 is: 127,088.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,830.29 : 326,765.61 = 84,720.56 : x
  2. Step 2: Convert to fraction form
    217,830.29/326,765.61 = 84,720.56/x
  3. Step 3: Cross multiply
    217,830.29x = 326,765.61 × 84,720.56
  4. Step 4: Simplify right side
    217,830.29x = 27,683,763,834.11
  5. Step 5: Solve for x
    x = 27,683,763,834.11/217,830.29
  6. Step 6: Final answer
    x = 127,088.68

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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.