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Finding the Fourth Proportional to 463,777.68, 640,064.79 and 259,861.80

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Solution

The fourth proportional to 463,777.68, 640,064.79 and 259,861.80 is: 358,638.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,777.68 : 640,064.79 = 259,861.80 : x
  2. Step 2: Convert to fraction form
    463,777.68/640,064.79 = 259,861.80/x
  3. Step 3: Cross multiply
    463,777.68x = 640,064.79 × 259,861.80
  4. Step 4: Simplify right side
    463,777.68x = 166,328,388,446.02
  5. Step 5: Solve for x
    x = 166,328,388,446.02/463,777.68
  6. Step 6: Final answer
    x = 358,638.19

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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.