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Finding the Fourth Proportional to 354,936.57, 489,855.42 and 202,011.95

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Solution

The fourth proportional to 354,936.57, 489,855.42 and 202,011.95 is: 278,800.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,936.57 : 489,855.42 = 202,011.95 : x
  2. Step 2: Convert to fraction form
    354,936.57/489,855.42 = 202,011.95/x
  3. Step 3: Cross multiply
    354,936.57x = 489,855.42 × 202,011.95
  4. Step 4: Simplify right side
    354,936.57x = 98,956,646,162.99
  5. Step 5: Solve for x
    x = 98,956,646,162.99/354,936.57
  6. Step 6: Final answer
    x = 278,800.93

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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.