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Finding the Fourth Proportional to 429,467.10, 644,200.65 and 303,495.90

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Solution

The fourth proportional to 429,467.10, 644,200.65 and 303,495.90 is: 455,243.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,467.10 : 644,200.65 = 303,495.90 : x
  2. Step 2: Convert to fraction form
    429,467.10/644,200.65 = 303,495.90/x
  3. Step 3: Cross multiply
    429,467.10x = 644,200.65 × 303,495.90
  4. Step 4: Simplify right side
    429,467.10x = 195,512,256,052.34
  5. Step 5: Solve for x
    x = 195,512,256,052.34/429,467.10
  6. Step 6: Final answer
    x = 455,243.85

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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.