Home / 219,818.80-329,555.94-86,798.63

Finding the Fourth Proportional to 219,818.80, 329,555.94 and 86,798.63

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Solution

The fourth proportional to 219,818.80, 329,555.94 and 86,798.63 is: 130,129.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,818.80 : 329,555.94 = 86,798.63 : x
  2. Step 2: Convert to fraction form
    219,818.80/329,555.94 = 86,798.63/x
  3. Step 3: Cross multiply
    219,818.80x = 329,555.94 × 86,798.63
  4. Step 4: Simplify right side
    219,818.80x = 28,605,002,452.58
  5. Step 5: Solve for x
    x = 28,605,002,452.58/219,818.80
  6. Step 6: Final answer
    x = 130,129.92

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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.