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Finding the Fourth Proportional to 488,935.86, 674,729.32 and 274,075.96

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Solution

The fourth proportional to 488,935.86, 674,729.32 and 274,075.96 is: 378,223.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,935.86 : 674,729.32 = 274,075.96 : x
  2. Step 2: Convert to fraction form
    488,935.86/674,729.32 = 274,075.96/x
  3. Step 3: Cross multiply
    488,935.86x = 674,729.32 × 274,075.96
  4. Step 4: Simplify right side
    488,935.86x = 184,927,086,119.15
  5. Step 5: Solve for x
    x = 184,927,086,119.15/488,935.86
  6. Step 6: Final answer
    x = 378,223.61

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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.