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Finding the Fourth Proportional to 488,878.72, 674,672.16 and 274,017.22

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Solution

The fourth proportional to 488,878.72, 674,672.16 and 274,017.22 is: 378,154.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,878.72 : 674,672.16 = 274,017.22 : x
  2. Step 2: Convert to fraction form
    488,878.72/674,672.16 = 274,017.22/x
  3. Step 3: Cross multiply
    488,878.72x = 674,672.16 × 274,017.22
  4. Step 4: Simplify right side
    488,878.72x = 184,871,789,694.60
  5. Step 5: Solve for x
    x = 184,871,789,694.60/488,878.72
  6. Step 6: Final answer
    x = 378,154.71

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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.