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Finding the Fourth Proportional to 395,655.30, 593,738.10 and 218,289.60

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Solution

The fourth proportional to 395,655.30, 593,738.10 and 218,289.60 is: 327,575.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,655.30 : 593,738.10 = 218,289.60 : x
  2. Step 2: Convert to fraction form
    395,655.30/593,738.10 = 218,289.60/x
  3. Step 3: Cross multiply
    395,655.30x = 593,738.10 × 218,289.60
  4. Step 4: Simplify right side
    395,655.30x = 129,606,852,353.76
  5. Step 5: Solve for x
    x = 129,606,852,353.76/395,655.30
  6. Step 6: Final answer
    x = 327,575.17

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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.