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Finding the Fourth Proportional to 212,665.75, 318,998.62 and 62,894.38

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Solution

The fourth proportional to 212,665.75, 318,998.62 and 62,894.38 is: 94,341.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,665.75 : 318,998.62 = 62,894.38 : x
  2. Step 2: Convert to fraction form
    212,665.75/318,998.62 = 62,894.38/x
  3. Step 3: Cross multiply
    212,665.75x = 318,998.62 × 62,894.38
  4. Step 4: Simplify right side
    212,665.75x = 20,063,220,425.76
  5. Step 5: Solve for x
    x = 20,063,220,425.76/212,665.75
  6. Step 6: Final answer
    x = 94,341.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.