Home / 217,910.12-326,562.78-99,291.56

Finding the Fourth Proportional to 217,910.12, 326,562.78 and 99,291.56

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Solution

The fourth proportional to 217,910.12, 326,562.78 and 99,291.56 is: 148,799.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,910.12 : 326,562.78 = 99,291.56 : x
  2. Step 2: Convert to fraction form
    217,910.12/326,562.78 = 99,291.56/x
  3. Step 3: Cross multiply
    217,910.12x = 326,562.78 × 99,291.56
  4. Step 4: Simplify right side
    217,910.12x = 32,424,927,864.14
  5. Step 5: Solve for x
    x = 32,424,927,864.14/217,910.12
  6. Step 6: Final answer
    x = 148,799.55

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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.