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Finding the Fourth Proportional to 253,007.11, 349,136.17 and 139,823.11

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Solution

The fourth proportional to 253,007.11, 349,136.17 and 139,823.11 is: 192,948.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,007.11 : 349,136.17 = 139,823.11 : x
  2. Step 2: Convert to fraction form
    253,007.11/349,136.17 = 139,823.11/x
  3. Step 3: Cross multiply
    253,007.11x = 349,136.17 × 139,823.11
  4. Step 4: Simplify right side
    253,007.11x = 48,817,305,102.89
  5. Step 5: Solve for x
    x = 48,817,305,102.89/253,007.11
  6. Step 6: Final answer
    x = 192,948.35

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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.