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Finding the Fourth Proportional to 429,901.92, 644,949.45 and 145,576.11

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Solution

The fourth proportional to 429,901.92, 644,949.45 and 145,576.11 is: 218,396.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,901.92 : 644,949.45 = 145,576.11 : x
  2. Step 2: Convert to fraction form
    429,901.92/644,949.45 = 145,576.11/x
  3. Step 3: Cross multiply
    429,901.92x = 644,949.45 × 145,576.11
  4. Step 4: Simplify right side
    429,901.92x = 93,889,232,077.64
  5. Step 5: Solve for x
    x = 93,889,232,077.64/429,901.92
  6. Step 6: Final answer
    x = 218,396.87

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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.