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Finding the Fourth Proportional to 354,445.31, 489,115.09 and 201,462.27

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Solution

The fourth proportional to 354,445.31, 489,115.09 and 201,462.27 is: 278,006.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,445.31 : 489,115.09 = 201,462.27 : x
  2. Step 2: Convert to fraction form
    354,445.31/489,115.09 = 201,462.27/x
  3. Step 3: Cross multiply
    354,445.31x = 489,115.09 × 201,462.27
  4. Step 4: Simplify right side
    354,445.31x = 98,538,232,869.77
  5. Step 5: Solve for x
    x = 98,538,232,869.77/354,445.31
  6. Step 6: Final answer
    x = 278,006.87

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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.