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Finding the Fourth Proportional to 630,354.84, 945,514.98 and 209,638.68

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Solution

The fourth proportional to 630,354.84, 945,514.98 and 209,638.68 is: 314,452.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,354.84 : 945,514.98 = 209,638.68 : x
  2. Step 2: Convert to fraction form
    630,354.84/945,514.98 = 209,638.68/x
  3. Step 3: Cross multiply
    630,354.84x = 945,514.98 × 209,638.68
  4. Step 4: Simplify right side
    630,354.84x = 198,216,512,327.43
  5. Step 5: Solve for x
    x = 198,216,512,327.43/630,354.84
  6. Step 6: Final answer
    x = 314,452.27

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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.