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Finding the Fourth Proportional to 488,212.28, 673,462.32 and 343,239.92

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Solution

The fourth proportional to 488,212.28, 673,462.32 and 343,239.92 is: 473,480.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,212.28 : 673,462.32 = 343,239.92 : x
  2. Step 2: Convert to fraction form
    488,212.28/673,462.32 = 343,239.92/x
  3. Step 3: Cross multiply
    488,212.28x = 673,462.32 × 343,239.92
  4. Step 4: Simplify right side
    488,212.28x = 231,159,152,839.81
  5. Step 5: Solve for x
    x = 231,159,152,839.81/488,212.28
  6. Step 6: Final answer
    x = 473,480.82

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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.