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Finding the Fourth Proportional to 354,439.50, 489,155.52 and 201,525.66

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Solution

The fourth proportional to 354,439.50, 489,155.52 and 201,525.66 is: 278,121.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,439.50 : 489,155.52 = 201,525.66 : x
  2. Step 2: Convert to fraction form
    354,439.50/489,155.52 = 201,525.66/x
  3. Step 3: Cross multiply
    354,439.50x = 489,155.52 × 201,525.66
  4. Step 4: Simplify right side
    354,439.50x = 98,577,389,010.64
  5. Step 5: Solve for x
    x = 98,577,389,010.64/354,439.50
  6. Step 6: Final answer
    x = 278,121.91

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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.