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Finding the Fourth Proportional to 378,099.99, 521,774.73 and 208,332.90

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Solution

The fourth proportional to 378,099.99, 521,774.73 and 208,332.90 is: 287,497.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,099.99 : 521,774.73 = 208,332.90 : x
  2. Step 2: Convert to fraction form
    378,099.99/521,774.73 = 208,332.90/x
  3. Step 3: Cross multiply
    378,099.99x = 521,774.73 × 208,332.90
  4. Step 4: Simplify right side
    378,099.99x = 108,702,842,647.62
  5. Step 5: Solve for x
    x = 108,702,842,647.62/378,099.99
  6. Step 6: Final answer
    x = 287,497.61

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1.5x scale

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.