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Finding the Fourth Proportional to 355,035.98, 489,947.15 and 193,891.07

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Solution

The fourth proportional to 355,035.98, 489,947.15 and 193,891.07 is: 267,568.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,035.98 : 489,947.15 = 193,891.07 : x
  2. Step 2: Convert to fraction form
    355,035.98/489,947.15 = 193,891.07/x
  3. Step 3: Cross multiply
    355,035.98x = 489,947.15 × 193,891.07
  4. Step 4: Simplify right side
    355,035.98x = 94,996,378,866.55
  5. Step 5: Solve for x
    x = 94,996,378,866.55/355,035.98
  6. Step 6: Final answer
    x = 267,568.31

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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.