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Finding the Fourth Proportional to 488,899.83, 674,712.95 and 274,039.95

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Solution

The fourth proportional to 488,899.83, 674,712.95 and 274,039.95 is: 378,192.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,899.83 : 674,712.95 = 274,039.95 : x
  2. Step 2: Convert to fraction form
    488,899.83/674,712.95 = 274,039.95/x
  3. Step 3: Cross multiply
    488,899.83x = 674,712.95 × 274,039.95
  4. Step 4: Simplify right side
    488,899.83x = 184,898,301,712.15
  5. Step 5: Solve for x
    x = 184,898,301,712.15/488,899.83
  6. Step 6: Final answer
    x = 378,192.61

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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.