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Finding the Fourth Proportional to 311,365.60, 467,048.82 and 86,726.68

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Solution

The fourth proportional to 311,365.60, 467,048.82 and 86,726.68 is: 130,090.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,365.60 : 467,048.82 = 86,726.68 : x
  2. Step 2: Convert to fraction form
    311,365.60/467,048.82 = 86,726.68/x
  3. Step 3: Cross multiply
    311,365.60x = 467,048.82 × 86,726.68
  4. Step 4: Simplify right side
    311,365.60x = 40,505,593,556.52
  5. Step 5: Solve for x
    x = 40,505,593,556.52/311,365.60
  6. Step 6: Final answer
    x = 130,090.14

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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.