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Finding the Fourth Proportional to 358,353.48, 494,527.86 and 197,220

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Solution

The fourth proportional to 358,353.48, 494,527.86 and 197,220 is: 272,163.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,353.48 : 494,527.86 = 197,220 : x
  2. Step 2: Convert to fraction form
    358,353.48/494,527.86 = 197,220/x
  3. Step 3: Cross multiply
    358,353.48x = 494,527.86 × 197,220
  4. Step 4: Simplify right side
    358,353.48x = 97,530,784,549.20
  5. Step 5: Solve for x
    x = 97,530,784,549.20/358,353.48
  6. Step 6: Final answer
    x = 272,163.63

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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.