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Finding the Fourth Proportional to 253,108.50, 349,297.02 and 139,938.54

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Solution

The fourth proportional to 253,108.50, 349,297.02 and 139,938.54 is: 193,119.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,108.50 : 349,297.02 = 139,938.54 : x
  2. Step 2: Convert to fraction form
    253,108.50/349,297.02 = 139,938.54/x
  3. Step 3: Cross multiply
    253,108.50x = 349,297.02 × 139,938.54
  4. Step 4: Simplify right side
    253,108.50x = 48,880,115,005.15
  5. Step 5: Solve for x
    x = 48,880,115,005.15/253,108.50
  6. Step 6: Final answer
    x = 193,119.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.