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Finding the Fourth Proportional to 479,279.74, 661,401.48 and 264,421.54

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Solution

The fourth proportional to 479,279.74, 661,401.48 and 264,421.54 is: 364,899.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,279.74 : 661,401.48 = 264,421.54 : x
  2. Step 2: Convert to fraction form
    479,279.74/661,401.48 = 264,421.54/x
  3. Step 3: Cross multiply
    479,279.74x = 661,401.48 × 264,421.54
  4. Step 4: Simplify right side
    479,279.74x = 174,888,797,899.88
  5. Step 5: Solve for x
    x = 174,888,797,899.88/479,279.74
  6. Step 6: Final answer
    x = 364,899.21

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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.