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Finding the Fourth Proportional to 210,522.90, 315,805.60 and 68,362.23

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Solution

The fourth proportional to 210,522.90, 315,805.60 and 68,362.23 is: 102,550.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,522.90 : 315,805.60 = 68,362.23 : x
  2. Step 2: Convert to fraction form
    210,522.90/315,805.60 = 68,362.23/x
  3. Step 3: Cross multiply
    210,522.90x = 315,805.60 × 68,362.23
  4. Step 4: Simplify right side
    210,522.90x = 21,589,175,062.49
  5. Step 5: Solve for x
    x = 21,589,175,062.49/210,522.90
  6. Step 6: Final answer
    x = 102,550.25

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1.5x scale

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.