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Finding the Fourth Proportional to 219,864.08, 329,574.54 and 86,692.88

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Solution

The fourth proportional to 219,864.08, 329,574.54 and 86,692.88 is: 129,951.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,864.08 : 329,574.54 = 86,692.88 : x
  2. Step 2: Convert to fraction form
    219,864.08/329,574.54 = 86,692.88/x
  3. Step 3: Cross multiply
    219,864.08x = 329,574.54 × 86,692.88
  4. Step 4: Simplify right side
    219,864.08x = 28,571,766,047.28
  5. Step 5: Solve for x
    x = 28,571,766,047.28/219,864.08
  6. Step 6: Final answer
    x = 129,951.95

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1.5x scale

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.