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Finding the Fourth Proportional to 212,993.38, 293,800.62 and 136,486.72

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Solution

The fourth proportional to 212,993.38, 293,800.62 and 136,486.72 is: 188,268.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,993.38 : 293,800.62 = 136,486.72 : x
  2. Step 2: Convert to fraction form
    212,993.38/293,800.62 = 136,486.72/x
  3. Step 3: Cross multiply
    212,993.38x = 293,800.62 × 136,486.72
  4. Step 4: Simplify right side
    212,993.38x = 40,099,882,957.77
  5. Step 5: Solve for x
    x = 40,099,882,957.77/212,993.38
  6. Step 6: Final answer
    x = 188,268.21

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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.