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Finding the Fourth Proportional to 429,767.07, 644,930.33 and 163,529.79

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Solution

The fourth proportional to 429,767.07, 644,930.33 and 163,529.79 is: 245,401.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,767.07 : 644,930.33 = 163,529.79 : x
  2. Step 2: Convert to fraction form
    429,767.07/644,930.33 = 163,529.79/x
  3. Step 3: Cross multiply
    429,767.07x = 644,930.33 × 163,529.79
  4. Step 4: Simplify right side
    429,767.07x = 105,465,320,611.88
  5. Step 5: Solve for x
    x = 105,465,320,611.88/429,767.07
  6. Step 6: Final answer
    x = 245,401.12

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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.