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Finding the Fourth Proportional to 487,612.85, 731,237.38 and 167,674.21

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Solution

The fourth proportional to 487,612.85, 731,237.38 and 167,674.21 is: 251,448.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,612.85 : 731,237.38 = 167,674.21 : x
  2. Step 2: Convert to fraction form
    487,612.85/731,237.38 = 167,674.21/x
  3. Step 3: Cross multiply
    487,612.85x = 731,237.38 × 167,674.21
  4. Step 4: Simplify right side
    487,612.85x = 122,609,647,766.69
  5. Step 5: Solve for x
    x = 122,609,647,766.69/487,612.85
  6. Step 6: Final answer
    x = 251,448.77

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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.