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Finding the Fourth Proportional to 351,805.89, 485,516.42 and 214,038.57

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Solution

The fourth proportional to 351,805.89, 485,516.42 and 214,038.57 is: 295,388.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,805.89 : 485,516.42 = 214,038.57 : x
  2. Step 2: Convert to fraction form
    351,805.89/485,516.42 = 214,038.57/x
  3. Step 3: Cross multiply
    351,805.89x = 485,516.42 × 214,038.57
  4. Step 4: Simplify right side
    351,805.89x = 103,919,240,783.42
  5. Step 5: Solve for x
    x = 103,919,240,783.42/351,805.89
  6. Step 6: Final answer
    x = 295,388.01

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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.