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Finding the Fourth Proportional to 221,808.95, 306,097.19 and 140,173.48

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Solution

The fourth proportional to 221,808.95, 306,097.19 and 140,173.48 is: 193,439.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,808.95 : 306,097.19 = 140,173.48 : x
  2. Step 2: Convert to fraction form
    221,808.95/306,097.19 = 140,173.48/x
  3. Step 3: Cross multiply
    221,808.95x = 306,097.19 × 140,173.48
  4. Step 4: Simplify right side
    221,808.95x = 42,906,707,639.65
  5. Step 5: Solve for x
    x = 42,906,707,639.65/221,808.95
  6. Step 6: Final answer
    x = 193,439.93

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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.