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Finding the Fourth Proportional to 630,062.80, 945,180.60 and 209,294.80

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Solution

The fourth proportional to 630,062.80, 945,180.60 and 209,294.80 is: 313,970.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,062.80 : 945,180.60 = 209,294.80 : x
  2. Step 2: Convert to fraction form
    630,062.80/945,180.60 = 209,294.80/x
  3. Step 3: Cross multiply
    630,062.80x = 945,180.60 × 209,294.80
  4. Step 4: Simplify right side
    630,062.80x = 197,821,384,640.88
  5. Step 5: Solve for x
    x = 197,821,384,640.88/630,062.80
  6. Step 6: Final answer
    x = 313,970.90

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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.