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Finding the Fourth Proportional to 488,938.84, 674,763.98 and 274,148.04

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Solution

The fourth proportional to 488,938.84, 674,763.98 and 274,148.04 is: 378,340.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,938.84 : 674,763.98 = 274,148.04 : x
  2. Step 2: Convert to fraction form
    488,938.84/674,763.98 = 274,148.04/x
  3. Step 3: Cross multiply
    488,938.84x = 674,763.98 × 274,148.04
  4. Step 4: Simplify right side
    488,938.84x = 184,985,222,579.60
  5. Step 5: Solve for x
    x = 184,985,222,579.60/488,938.84
  6. Step 6: Final answer
    x = 378,340.21

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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.