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Finding the Fourth Proportional to 630,310.53, 945,474.03 and 209,586.45

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Solution

The fourth proportional to 630,310.53, 945,474.03 and 209,586.45 is: 314,382.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,310.53 : 945,474.03 = 209,586.45 : x
  2. Step 2: Convert to fraction form
    630,310.53/945,474.03 = 209,586.45/x
  3. Step 3: Cross multiply
    630,310.53x = 945,474.03 × 209,586.45
  4. Step 4: Simplify right side
    630,310.53x = 198,158,545,514.89
  5. Step 5: Solve for x
    x = 198,158,545,514.89/630,310.53
  6. Step 6: Final answer
    x = 314,382.41

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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.