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Finding the Fourth Proportional to 314,644.45, 434,207.09 and 171,404.46

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Solution

The fourth proportional to 314,644.45, 434,207.09 and 171,404.46 is: 236,536.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,644.45 : 434,207.09 = 171,404.46 : x
  2. Step 2: Convert to fraction form
    314,644.45/434,207.09 = 171,404.46/x
  3. Step 3: Cross multiply
    314,644.45x = 434,207.09 × 171,404.46
  4. Step 4: Simplify right side
    314,644.45x = 74,425,031,789.62
  5. Step 5: Solve for x
    x = 74,425,031,789.62/314,644.45
  6. Step 6: Final answer
    x = 236,536.93

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1.5x scale

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.