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Finding the Fourth Proportional to 253,932.64, 350,424.80 and 139,209.19

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Solution

The fourth proportional to 253,932.64, 350,424.80 and 139,209.19 is: 192,107.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,932.64 : 350,424.80 = 139,209.19 : x
  2. Step 2: Convert to fraction form
    253,932.64/350,424.80 = 139,209.19/x
  3. Step 3: Cross multiply
    253,932.64x = 350,424.80 × 139,209.19
  4. Step 4: Simplify right side
    253,932.64x = 48,782,352,563.91
  5. Step 5: Solve for x
    x = 48,782,352,563.91/253,932.64
  6. Step 6: Final answer
    x = 192,107.45

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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.