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Finding the Fourth Proportional to 253,005.36, 349,133.76 and 139,821.36

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Solution

The fourth proportional to 253,005.36, 349,133.76 and 139,821.36 is: 192,945.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,005.36 : 349,133.76 = 139,821.36 : x
  2. Step 2: Convert to fraction form
    253,005.36/349,133.76 = 139,821.36/x
  3. Step 3: Cross multiply
    253,005.36x = 349,133.76 × 139,821.36
  4. Step 4: Simplify right side
    253,005.36x = 48,816,357,145.11
  5. Step 5: Solve for x
    x = 48,816,357,145.11/253,005.36
  6. Step 6: Final answer
    x = 192,945.94

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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.