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Finding the Fourth Proportional to 630,129.48, 945,317.24 and 203,771.20

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Solution

The fourth proportional to 630,129.48, 945,317.24 and 203,771.20 is: 305,696.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,129.48 : 945,317.24 = 203,771.20 : x
  2. Step 2: Convert to fraction form
    630,129.48/945,317.24 = 203,771.20/x
  3. Step 3: Cross multiply
    630,129.48x = 945,317.24 × 203,771.20
  4. Step 4: Simplify right side
    630,129.48x = 192,628,428,375.49
  5. Step 5: Solve for x
    x = 192,628,428,375.49/630,129.48
  6. Step 6: Final answer
    x = 305,696.58

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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.