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Finding the Fourth Proportional to 253,136.16, 349,297.36 and 139,943.52

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Solution

The fourth proportional to 253,136.16, 349,297.36 and 139,943.52 is: 193,105.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,136.16 : 349,297.36 = 139,943.52 : x
  2. Step 2: Convert to fraction form
    253,136.16/349,297.36 = 139,943.52/x
  3. Step 3: Cross multiply
    253,136.16x = 349,297.36 × 139,943.52
  4. Step 4: Simplify right side
    253,136.16x = 48,881,902,085.11
  5. Step 5: Solve for x
    x = 48,881,902,085.11/253,136.16
  6. Step 6: Final answer
    x = 193,105.17

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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.