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Finding the Fourth Proportional to 630,213.90, 943,297.65 and 330,266.70

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Solution

The fourth proportional to 630,213.90, 943,297.65 and 330,266.70 is: 494,339.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,213.90 : 943,297.65 = 330,266.70 : x
  2. Step 2: Convert to fraction form
    630,213.90/943,297.65 = 330,266.70/x
  3. Step 3: Cross multiply
    630,213.90x = 943,297.65 × 330,266.70
  4. Step 4: Simplify right side
    630,213.90x = 311,539,801,983.26
  5. Step 5: Solve for x
    x = 311,539,801,983.26/630,213.90
  6. Step 6: Final answer
    x = 494,339.78

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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.