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Finding the Fourth Proportional to 354,519.81, 489,238.83 and 193,378.32

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Solution

The fourth proportional to 354,519.81, 489,238.83 and 193,378.32 is: 266,862.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,519.81 : 489,238.83 = 193,378.32 : x
  2. Step 2: Convert to fraction form
    354,519.81/489,238.83 = 193,378.32/x
  3. Step 3: Cross multiply
    354,519.81x = 489,238.83 × 193,378.32
  4. Step 4: Simplify right side
    354,519.81x = 94,608,183,024.17
  5. Step 5: Solve for x
    x = 94,608,183,024.17/354,519.81
  6. Step 6: Final answer
    x = 266,862.90

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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.