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Finding the Fourth Proportional to 488,905.76, 674,689.06 and 274,045.77

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Solution

The fourth proportional to 488,905.76, 674,689.06 and 274,045.77 is: 378,182.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,905.76 : 674,689.06 = 274,045.77 : x
  2. Step 2: Convert to fraction form
    488,905.76/674,689.06 = 274,045.77/x
  3. Step 3: Cross multiply
    488,905.76x = 674,689.06 × 274,045.77
  4. Step 4: Simplify right side
    488,905.76x = 184,895,682,958.28
  5. Step 5: Solve for x
    x = 184,895,682,958.28/488,905.76
  6. Step 6: Final answer
    x = 378,182.66

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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.