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Finding the Fourth Proportional to 354,123.12, 485,940.66 and 322,047.12

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Solution

The fourth proportional to 354,123.12, 485,940.66 and 322,047.12 is: 441,924.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,123.12 : 485,940.66 = 322,047.12 : x
  2. Step 2: Convert to fraction form
    354,123.12/485,940.66 = 322,047.12/x
  3. Step 3: Cross multiply
    354,123.12x = 485,940.66 × 322,047.12
  4. Step 4: Simplify right side
    354,123.12x = 156,495,790,043.90
  5. Step 5: Solve for x
    x = 156,495,790,043.90/354,123.12
  6. Step 6: Final answer
    x = 441,924.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.