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Finding the Fourth Proportional to 210,495.34, 315,792.80 and 68,340.34

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Solution

The fourth proportional to 210,495.34, 315,792.80 and 68,340.34 is: 102,526.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,495.34 : 315,792.80 = 68,340.34 : x
  2. Step 2: Convert to fraction form
    210,495.34/315,792.80 = 68,340.34/x
  3. Step 3: Cross multiply
    210,495.34x = 315,792.80 × 68,340.34
  4. Step 4: Simplify right side
    210,495.34x = 21,581,387,321.55
  5. Step 5: Solve for x
    x = 21,581,387,321.55/210,495.34
  6. Step 6: Final answer
    x = 102,526.68

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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.