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Finding the Fourth Proportional to 259,940.20, 389,910.30 and 160,731.40

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Solution

The fourth proportional to 259,940.20, 389,910.30 and 160,731.40 is: 241,097.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,940.20 : 389,910.30 = 160,731.40 : x
  2. Step 2: Convert to fraction form
    259,940.20/389,910.30 = 160,731.40/x
  3. Step 3: Cross multiply
    259,940.20x = 389,910.30 × 160,731.40
  4. Step 4: Simplify right side
    259,940.20x = 62,670,828,393.42
  5. Step 5: Solve for x
    x = 62,670,828,393.42/259,940.20
  6. Step 6: Final answer
    x = 241,097.10

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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.