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Finding the Fourth Proportional to 263,911.91, 395,570.79 and 130,887.63

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Solution

The fourth proportional to 263,911.91, 395,570.79 and 130,887.63 is: 196,184.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,911.91 : 395,570.79 = 130,887.63 : x
  2. Step 2: Convert to fraction form
    263,911.91/395,570.79 = 130,887.63/x
  3. Step 3: Cross multiply
    263,911.91x = 395,570.79 × 130,887.63
  4. Step 4: Simplify right side
    263,911.91x = 51,775,323,200.33
  5. Step 5: Solve for x
    x = 51,775,323,200.33/263,911.91
  6. Step 6: Final answer
    x = 196,184.11

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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.