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Finding the Fourth Proportional to 213,666.66, 319,843.89 and 134,409.78

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Solution

The fourth proportional to 213,666.66, 319,843.89 and 134,409.78 is: 201,201.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,666.66 : 319,843.89 = 134,409.78 : x
  2. Step 2: Convert to fraction form
    213,666.66/319,843.89 = 134,409.78/x
  3. Step 3: Cross multiply
    213,666.66x = 319,843.89 × 134,409.78
  4. Step 4: Simplify right side
    213,666.66x = 42,990,146,889.24
  5. Step 5: Solve for x
    x = 42,990,146,889.24/213,666.66
  6. Step 6: Final answer
    x = 201,201.94

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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.