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Finding the Fourth Proportional to 351,876.89, 485,590.93 and 190,731.20

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Solution

The fourth proportional to 351,876.89, 485,590.93 and 190,731.20 is: 263,209.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,876.89 : 485,590.93 = 190,731.20 : x
  2. Step 2: Convert to fraction form
    351,876.89/485,590.93 = 190,731.20/x
  3. Step 3: Cross multiply
    351,876.89x = 485,590.93 × 190,731.20
  4. Step 4: Simplify right side
    351,876.89x = 92,617,337,883.23
  5. Step 5: Solve for x
    x = 92,617,337,883.23/351,876.89
  6. Step 6: Final answer
    x = 263,209.49

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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.