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Finding the Fourth Proportional to 351,435, 485,006.22 and 217,324.92

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Solution

The fourth proportional to 351,435, 485,006.22 and 217,324.92 is: 299,924.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,435 : 485,006.22 = 217,324.92 : x
  2. Step 2: Convert to fraction form
    351,435/485,006.22 = 217,324.92/x
  3. Step 3: Cross multiply
    351,435x = 485,006.22 × 217,324.92
  4. Step 4: Simplify right side
    351,435x = 105,403,937,961.00
  5. Step 5: Solve for x
    x = 105,403,937,961.00/351,435
  6. Step 6: Final answer
    x = 299,924.42

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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.