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Finding the Fourth Proportional to 253,059.36, 349,208.28 and 139,875.36

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Solution

The fourth proportional to 253,059.36, 349,208.28 and 139,875.36 is: 193,020.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,059.36 : 349,208.28 = 139,875.36 : x
  2. Step 2: Convert to fraction form
    253,059.36/349,208.28 = 139,875.36/x
  3. Step 3: Cross multiply
    253,059.36x = 349,208.28 × 139,875.36
  4. Step 4: Simplify right side
    253,059.36x = 48,845,633,879.98
  5. Step 5: Solve for x
    x = 48,845,633,879.98/253,059.36
  6. Step 6: Final answer
    x = 193,020.46

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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.