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Finding the Fourth Proportional to 429,401.07, 644,101.64 and 133,913.07

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Solution

The fourth proportional to 429,401.07, 644,101.64 and 133,913.07 is: 200,869.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,401.07 : 644,101.64 = 133,913.07 : x
  2. Step 2: Convert to fraction form
    429,401.07/644,101.64 = 133,913.07/x
  3. Step 3: Cross multiply
    429,401.07x = 644,101.64 × 133,913.07
  4. Step 4: Simplify right side
    429,401.07x = 86,253,627,334.87
  5. Step 5: Solve for x
    x = 86,253,627,334.87/429,401.07
  6. Step 6: Final answer
    x = 200,869.61

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Similar ratio
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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.