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Finding the Fourth Proportional to 478,044.39, 659,676.21 and 263,142.48

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Solution

The fourth proportional to 478,044.39, 659,676.21 and 263,142.48 is: 363,122.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,044.39 : 659,676.21 = 263,142.48 : x
  2. Step 2: Convert to fraction form
    478,044.39/659,676.21 = 263,142.48/x
  3. Step 3: Cross multiply
    478,044.39x = 659,676.21 × 263,142.48
  4. Step 4: Simplify right side
    478,044.39x = 173,588,832,247.21
  5. Step 5: Solve for x
    x = 173,588,832,247.21/478,044.39
  6. Step 6: Final answer
    x = 363,122.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.