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Finding the Fourth Proportional to 351,579.96, 485,176.10 and 213,713.22

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Solution

The fourth proportional to 351,579.96, 485,176.10 and 213,713.22 is: 294,921.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,579.96 : 485,176.10 = 213,713.22 : x
  2. Step 2: Convert to fraction form
    351,579.96/485,176.10 = 213,713.22/x
  3. Step 3: Cross multiply
    351,579.96x = 485,176.10 × 213,713.22
  4. Step 4: Simplify right side
    351,579.96x = 103,688,545,529.48
  5. Step 5: Solve for x
    x = 103,688,545,529.48/351,579.96
  6. Step 6: Final answer
    x = 294,921.66

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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.