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Finding the Fourth Proportional to 253,935.60, 380,780.28 and 76,409.52

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Solution

The fourth proportional to 253,935.60, 380,780.28 and 76,409.52 is: 114,577.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,935.60 : 380,780.28 = 76,409.52 : x
  2. Step 2: Convert to fraction form
    253,935.60/380,780.28 = 76,409.52/x
  3. Step 3: Cross multiply
    253,935.60x = 380,780.28 × 76,409.52
  4. Step 4: Simplify right side
    253,935.60x = 29,095,238,420.27
  5. Step 5: Solve for x
    x = 29,095,238,420.27/253,935.60
  6. Step 6: Final answer
    x = 114,577.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.