Home / 219,820.55-329,558.56-86,800.38

Finding the Fourth Proportional to 219,820.55, 329,558.56 and 86,800.38

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Solution

The fourth proportional to 219,820.55, 329,558.56 and 86,800.38 is: 130,132.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,820.55 : 329,558.56 = 86,800.38 : x
  2. Step 2: Convert to fraction form
    219,820.55/329,558.56 = 86,800.38/x
  3. Step 3: Cross multiply
    219,820.55x = 329,558.56 × 86,800.38
  4. Step 4: Simplify right side
    219,820.55x = 28,605,808,240.25
  5. Step 5: Solve for x
    x = 28,605,808,240.25/219,820.55
  6. Step 6: Final answer
    x = 130,132.55

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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.