Home / 219,432.29-329,119.25-86,276.79

Finding the Fourth Proportional to 219,432.29, 329,119.25 and 86,276.79

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Solution

The fourth proportional to 219,432.29, 329,119.25 and 86,276.79 is: 129,403.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,432.29 : 329,119.25 = 86,276.79 : x
  2. Step 2: Convert to fraction form
    219,432.29/329,119.25 = 86,276.79/x
  3. Step 3: Cross multiply
    219,432.29x = 329,119.25 × 86,276.79
  4. Step 4: Simplify right side
    219,432.29x = 28,395,351,985.82
  5. Step 5: Solve for x
    x = 28,395,351,985.82/219,432.29
  6. Step 6: Final answer
    x = 129,403.71

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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.