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Finding the Fourth Proportional to 307,094.22, 423,803.07 and 171,128.34

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Solution

The fourth proportional to 307,094.22, 423,803.07 and 171,128.34 is: 236,164.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,094.22 : 423,803.07 = 171,128.34 : x
  2. Step 2: Convert to fraction form
    307,094.22/423,803.07 = 171,128.34/x
  3. Step 3: Cross multiply
    307,094.22x = 423,803.07 × 171,128.34
  4. Step 4: Simplify right side
    307,094.22x = 72,524,715,856.00
  5. Step 5: Solve for x
    x = 72,524,715,856.00/307,094.22
  6. Step 6: Final answer
    x = 236,164.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.