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Finding the Fourth Proportional to 486,961.88, 730,374.78 and 167,108.72

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Solution

The fourth proportional to 486,961.88, 730,374.78 and 167,108.72 is: 250,639.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,961.88 : 730,374.78 = 167,108.72 : x
  2. Step 2: Convert to fraction form
    486,961.88/730,374.78 = 167,108.72/x
  3. Step 3: Cross multiply
    486,961.88x = 730,374.78 × 167,108.72
  4. Step 4: Simplify right side
    486,961.88x = 122,051,994,606.08
  5. Step 5: Solve for x
    x = 122,051,994,606.08/486,961.88
  6. Step 6: Final answer
    x = 250,639.73

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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.