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Finding the Fourth Proportional to 364,855.78, 503,566.50 and 217,690.12

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Solution

The fourth proportional to 364,855.78, 503,566.50 and 217,690.12 is: 300,451.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,855.78 : 503,566.50 = 217,690.12 : x
  2. Step 2: Convert to fraction form
    364,855.78/503,566.50 = 217,690.12/x
  3. Step 3: Cross multiply
    364,855.78x = 503,566.50 × 217,690.12
  4. Step 4: Simplify right side
    364,855.78x = 109,621,451,812.98
  5. Step 5: Solve for x
    x = 109,621,451,812.98/364,855.78
  6. Step 6: Final answer
    x = 300,451.46

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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.