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Finding the Fourth Proportional to 253,072.54, 349,226.40 and 139,888

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Solution

The fourth proportional to 253,072.54, 349,226.40 and 139,888 is: 193,037.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,072.54 : 349,226.40 = 139,888 : x
  2. Step 2: Convert to fraction form
    253,072.54/349,226.40 = 139,888/x
  3. Step 3: Cross multiply
    253,072.54x = 349,226.40 × 139,888
  4. Step 4: Simplify right side
    253,072.54x = 48,852,582,643.20
  5. Step 5: Solve for x
    x = 48,852,582,643.20/253,072.54
  6. Step 6: Final answer
    x = 193,037.86

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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.