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Finding the Fourth Proportional to 213,703.18, 319,738.66 and 186,850.88

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Solution

The fourth proportional to 213,703.18, 319,738.66 and 186,850.88 is: 279,562.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,703.18 : 319,738.66 = 186,850.88 : x
  2. Step 2: Convert to fraction form
    213,703.18/319,738.66 = 186,850.88/x
  3. Step 3: Cross multiply
    213,703.18x = 319,738.66 × 186,850.88
  4. Step 4: Simplify right side
    213,703.18x = 59,743,449,991.02
  5. Step 5: Solve for x
    x = 59,743,449,991.02/213,703.18
  6. Step 6: Final answer
    x = 279,562.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.