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Finding the Fourth Proportional to 478,239.82, 659,962.92 and 263,399.87

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Solution

The fourth proportional to 478,239.82, 659,962.92 and 263,399.87 is: 363,487.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,239.82 : 659,962.92 = 263,399.87 : x
  2. Step 2: Convert to fraction form
    478,239.82/659,962.92 = 263,399.87/x
  3. Step 3: Cross multiply
    478,239.82x = 659,962.92 × 263,399.87
  4. Step 4: Simplify right side
    478,239.82x = 173,834,150,136.93
  5. Step 5: Solve for x
    x = 173,834,150,136.93/478,239.82
  6. Step 6: Final answer
    x = 363,487.40

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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.