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Finding the Fourth Proportional to 488,938.35, 674,763.29 and 274,147.54

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Solution

The fourth proportional to 488,938.35, 674,763.29 and 274,147.54 is: 378,339.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,938.35 : 674,763.29 = 274,147.54 : x
  2. Step 2: Convert to fraction form
    488,938.35/674,763.29 = 274,147.54/x
  3. Step 3: Cross multiply
    488,938.35x = 674,763.29 × 274,147.54
  4. Step 4: Simplify right side
    488,938.35x = 184,984,696,035.81
  5. Step 5: Solve for x
    x = 184,984,696,035.81/488,938.35
  6. Step 6: Final answer
    x = 378,339.51

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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.