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Finding the Fourth Proportional to 488,951.88, 674,756.04 and 285,144.13

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Solution

The fourth proportional to 488,951.88, 674,756.04 and 285,144.13 is: 393,500.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,951.88 : 674,756.04 = 285,144.13 : x
  2. Step 2: Convert to fraction form
    488,951.88/674,756.04 = 285,144.13/x
  3. Step 3: Cross multiply
    488,951.88x = 674,756.04 × 285,144.13
  4. Step 4: Simplify right side
    488,951.88x = 192,402,723,988.05
  5. Step 5: Solve for x
    x = 192,402,723,988.05/488,951.88
  6. Step 6: Final answer
    x = 393,500.33

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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.