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Finding the Fourth Proportional to 630,438.79, 945,588.10 and 225,614.67

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Solution

The fourth proportional to 630,438.79, 945,588.10 and 225,614.67 is: 338,396.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,438.79 : 945,588.10 = 225,614.67 : x
  2. Step 2: Convert to fraction form
    630,438.79/945,588.10 = 225,614.67/x
  3. Step 3: Cross multiply
    630,438.79x = 945,588.10 × 225,614.67
  4. Step 4: Simplify right side
    630,438.79x = 213,338,542,775.49
  5. Step 5: Solve for x
    x = 213,338,542,775.49/630,438.79
  6. Step 6: Final answer
    x = 338,396.91

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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.