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Finding the Fourth Proportional to 212,389.77, 318,544.16 and 62,636.97

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Solution

The fourth proportional to 212,389.77, 318,544.16 and 62,636.97 is: 93,943.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,389.77 : 318,544.16 = 62,636.97 : x
  2. Step 2: Convert to fraction form
    212,389.77/318,544.16 = 62,636.97/x
  3. Step 3: Cross multiply
    212,389.77x = 318,544.16 × 62,636.97
  4. Step 4: Simplify right side
    212,389.77x = 19,952,640,680.41
  5. Step 5: Solve for x
    x = 19,952,640,680.41/212,389.77
  6. Step 6: Final answer
    x = 93,943.51

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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.