Home / 210,631.53-315,997.40-68,477.43

Finding the Fourth Proportional to 210,631.53, 315,997.40 and 68,477.43

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Solution

The fourth proportional to 210,631.53, 315,997.40 and 68,477.43 is: 102,732.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,631.53 : 315,997.40 = 68,477.43 : x
  2. Step 2: Convert to fraction form
    210,631.53/315,997.40 = 68,477.43/x
  3. Step 3: Cross multiply
    210,631.53x = 315,997.40 × 68,477.43
  4. Step 4: Simplify right side
    210,631.53x = 21,638,689,496.29
  5. Step 5: Solve for x
    x = 21,638,689,496.29/210,631.53
  6. Step 6: Final answer
    x = 102,732.43

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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.