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Finding the Fourth Proportional to 429,324.58, 644,009.66 and 129,797.52

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Solution

The fourth proportional to 429,324.58, 644,009.66 and 129,797.52 is: 194,703.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,324.58 : 644,009.66 = 129,797.52 : x
  2. Step 2: Convert to fraction form
    429,324.58/644,009.66 = 129,797.52/x
  3. Step 3: Cross multiply
    429,324.58x = 644,009.66 × 129,797.52
  4. Step 4: Simplify right side
    429,324.58x = 83,590,856,724.04
  5. Step 5: Solve for x
    x = 83,590,856,724.04/429,324.58
  6. Step 6: Final answer
    x = 194,703.17

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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.