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Finding the Fourth Proportional to 442,622.90, 610,819.64 and 251,636.30

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Solution

The fourth proportional to 442,622.90, 610,819.64 and 251,636.30 is: 347,258.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,622.90 : 610,819.64 = 251,636.30 : x
  2. Step 2: Convert to fraction form
    442,622.90/610,819.64 = 251,636.30/x
  3. Step 3: Cross multiply
    442,622.90x = 610,819.64 × 251,636.30
  4. Step 4: Simplify right side
    442,622.90x = 153,704,393,098.86
  5. Step 5: Solve for x
    x = 153,704,393,098.86/442,622.90
  6. Step 6: Final answer
    x = 347,258.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.