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Finding the Fourth Proportional to 429,925.69, 644,890.02 and 130,408.84

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Solution

The fourth proportional to 429,925.69, 644,890.02 and 130,408.84 is: 195,613.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,925.69 : 644,890.02 = 130,408.84 : x
  2. Step 2: Convert to fraction form
    429,925.69/644,890.02 = 130,408.84/x
  3. Step 3: Cross multiply
    429,925.69x = 644,890.02 × 130,408.84
  4. Step 4: Simplify right side
    429,925.69x = 84,099,359,435.78
  5. Step 5: Solve for x
    x = 84,099,359,435.78/429,925.69
  6. Step 6: Final answer
    x = 195,613.71

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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.