Home / 218,875.14-328,301.78-76,676.40

Finding the Fourth Proportional to 218,875.14, 328,301.78 and 76,676.40

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Solution

The fourth proportional to 218,875.14, 328,301.78 and 76,676.40 is: 115,010.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,875.14 : 328,301.78 = 76,676.40 : x
  2. Step 2: Convert to fraction form
    218,875.14/328,301.78 = 76,676.40/x
  3. Step 3: Cross multiply
    218,875.14x = 328,301.78 × 76,676.40
  4. Step 4: Simplify right side
    218,875.14x = 25,172,998,603.99
  5. Step 5: Solve for x
    x = 25,172,998,603.99/218,875.14
  6. Step 6: Final answer
    x = 115,010.77

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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.