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Finding the Fourth Proportional to 269,075.73, 403,415.94 and 128,932.77

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Solution

The fourth proportional to 269,075.73, 403,415.94 and 128,932.77 is: 193,304.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,075.73 : 403,415.94 = 128,932.77 : x
  2. Step 2: Convert to fraction form
    269,075.73/403,415.94 = 128,932.77/x
  3. Step 3: Cross multiply
    269,075.73x = 403,415.94 × 128,932.77
  4. Step 4: Simplify right side
    269,075.73x = 52,013,534,606.35
  5. Step 5: Solve for x
    x = 52,013,534,606.35/269,075.73
  6. Step 6: Final answer
    x = 193,304.44

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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.