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Finding the Fourth Proportional to 219,686.80, 329,530.20 and 101,588.80

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Solution

The fourth proportional to 219,686.80, 329,530.20 and 101,588.80 is: 152,383.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,686.80 : 329,530.20 = 101,588.80 : x
  2. Step 2: Convert to fraction form
    219,686.80/329,530.20 = 101,588.80/x
  3. Step 3: Cross multiply
    219,686.80x = 329,530.20 × 101,588.80
  4. Step 4: Simplify right side
    219,686.80x = 33,476,577,581.76
  5. Step 5: Solve for x
    x = 33,476,577,581.76/219,686.80
  6. Step 6: Final answer
    x = 152,383.20

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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.