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Finding the Fourth Proportional to 356,453.42, 534,763.96 and 103,739.36

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Solution

The fourth proportional to 356,453.42, 534,763.96 and 103,739.36 is: 155,633.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,453.42 : 534,763.96 = 103,739.36 : x
  2. Step 2: Convert to fraction form
    356,453.42/534,763.96 = 103,739.36/x
  3. Step 3: Cross multiply
    356,453.42x = 534,763.96 × 103,739.36
  4. Step 4: Simplify right side
    356,453.42x = 55,476,070,961.47
  5. Step 5: Solve for x
    x = 55,476,070,961.47/356,453.42
  6. Step 6: Final answer
    x = 155,633.44

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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.