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Finding the Fourth Proportional to 476,778.42, 715,166.94 and 121,792.56

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Solution

The fourth proportional to 476,778.42, 715,166.94 and 121,792.56 is: 182,688.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,778.42 : 715,166.94 = 121,792.56 : x
  2. Step 2: Convert to fraction form
    476,778.42/715,166.94 = 121,792.56/x
  3. Step 3: Cross multiply
    476,778.42x = 715,166.94 × 121,792.56
  4. Step 4: Simplify right side
    476,778.42x = 87,102,012,449.97
  5. Step 5: Solve for x
    x = 87,102,012,449.97/476,778.42
  6. Step 6: Final answer
    x = 182,688.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.