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Finding the Fourth Proportional to 429,797.34, 644,542.92 and 163,629.72

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Solution

The fourth proportional to 429,797.34, 644,542.92 and 163,629.72 is: 245,386.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,797.34 : 644,542.92 = 163,629.72 : x
  2. Step 2: Convert to fraction form
    429,797.34/644,542.92 = 163,629.72/x
  3. Step 3: Cross multiply
    429,797.34x = 644,542.92 × 163,629.72
  4. Step 4: Simplify right side
    429,797.34x = 105,466,377,527.58
  5. Step 5: Solve for x
    x = 105,466,377,527.58/429,797.34
  6. Step 6: Final answer
    x = 245,386.30

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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.