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Finding the Fourth Proportional to 356,357.57, 534,620.15 and 103,643.64

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Solution

The fourth proportional to 356,357.57, 534,620.15 and 103,643.64 is: 155,489.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,357.57 : 534,620.15 = 103,643.64 : x
  2. Step 2: Convert to fraction form
    356,357.57/534,620.15 = 103,643.64/x
  3. Step 3: Cross multiply
    356,357.57x = 534,620.15 × 103,643.64
  4. Step 4: Simplify right side
    356,357.57x = 55,409,977,845.13
  5. Step 5: Solve for x
    x = 55,409,977,845.13/356,357.57
  6. Step 6: Final answer
    x = 155,489.83

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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.