Home / 429,206.50-643,654.23-192,427.30

Finding the Fourth Proportional to 429,206.50, 643,654.23 and 192,427.30

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Solution

The fourth proportional to 429,206.50, 643,654.23 and 192,427.30 is: 288,571.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,206.50 : 643,654.23 = 192,427.30 : x
  2. Step 2: Convert to fraction form
    429,206.50/643,654.23 = 192,427.30/x
  3. Step 3: Cross multiply
    429,206.50x = 643,654.23 × 192,427.30
  4. Step 4: Simplify right side
    429,206.50x = 123,856,645,612.48
  5. Step 5: Solve for x
    x = 123,856,645,612.48/429,206.50
  6. Step 6: Final answer
    x = 288,571.23

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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.