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Finding the Fourth Proportional to 253,136.82, 349,335.81 and 139,963.62

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Solution

The fourth proportional to 253,136.82, 349,335.81 and 139,963.62 is: 193,153.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,136.82 : 349,335.81 = 139,963.62 : x
  2. Step 2: Convert to fraction form
    253,136.82/349,335.81 = 139,963.62/x
  3. Step 3: Cross multiply
    253,136.82x = 349,335.81 × 139,963.62
  4. Step 4: Simplify right side
    253,136.82x = 48,894,304,563.23
  5. Step 5: Solve for x
    x = 48,894,304,563.23/253,136.82
  6. Step 6: Final answer
    x = 193,153.67

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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.