Home / 219,555.03-329,443.20-86,530.75

Finding the Fourth Proportional to 219,555.03, 329,443.20 and 86,530.75

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Solution

The fourth proportional to 219,555.03, 329,443.20 and 86,530.75 is: 129,839.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,555.03 : 329,443.20 = 86,530.75 : x
  2. Step 2: Convert to fraction form
    219,555.03/329,443.20 = 86,530.75/x
  3. Step 3: Cross multiply
    219,555.03x = 329,443.20 × 86,530.75
  4. Step 4: Simplify right side
    219,555.03x = 28,506,967,178.40
  5. Step 5: Solve for x
    x = 28,506,967,178.40/219,555.03
  6. Step 6: Final answer
    x = 129,839.74

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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.