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Finding the Fourth Proportional to 429,661.56, 644,336.82 and 205,012.92

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Solution

The fourth proportional to 429,661.56, 644,336.82 and 205,012.92 is: 307,445.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,661.56 : 644,336.82 = 205,012.92 : x
  2. Step 2: Convert to fraction form
    429,661.56/644,336.82 = 205,012.92/x
  3. Step 3: Cross multiply
    429,661.56x = 644,336.82 × 205,012.92
  4. Step 4: Simplify right side
    429,661.56x = 132,097,372,931.71
  5. Step 5: Solve for x
    x = 132,097,372,931.71/429,661.56
  6. Step 6: Final answer
    x = 307,445.17

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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.