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Finding the Fourth Proportional to 488,896.65, 674,708.55 and 274,036.76

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Solution

The fourth proportional to 488,896.65, 674,708.55 and 274,036.76 is: 378,188.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,896.65 : 674,708.55 = 274,036.76 : x
  2. Step 2: Convert to fraction form
    488,896.65/674,708.55 = 274,036.76/x
  3. Step 3: Cross multiply
    488,896.65x = 674,708.55 × 274,036.76
  4. Step 4: Simplify right side
    488,896.65x = 184,894,941,612.76
  5. Step 5: Solve for x
    x = 184,894,941,612.76/488,896.65
  6. Step 6: Final answer
    x = 378,188.20

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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.