Home / 219,837.60-329,756.40-86,722.20

Finding the Fourth Proportional to 219,837.60, 329,756.40 and 86,722.20

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Solution

The fourth proportional to 219,837.60, 329,756.40 and 86,722.20 is: 130,083.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,837.60 : 329,756.40 = 86,722.20 : x
  2. Step 2: Convert to fraction form
    219,837.60/329,756.40 = 86,722.20/x
  3. Step 3: Cross multiply
    219,837.60x = 329,756.40 × 86,722.20
  4. Step 4: Simplify right side
    219,837.60x = 28,597,200,472.08
  5. Step 5: Solve for x
    x = 28,597,200,472.08/219,837.60
  6. Step 6: Final answer
    x = 130,083.30

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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.