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Finding the Fourth Proportional to 321,908.30, 482,670.45 and 197,338.70

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Solution

The fourth proportional to 321,908.30, 482,670.45 and 197,338.70 is: 295,890.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,908.30 : 482,670.45 = 197,338.70 : x
  2. Step 2: Convert to fraction form
    321,908.30/482,670.45 = 197,338.70/x
  3. Step 3: Cross multiply
    321,908.30x = 482,670.45 × 197,338.70
  4. Step 4: Simplify right side
    321,908.30x = 95,249,559,131.42
  5. Step 5: Solve for x
    x = 95,249,559,131.42/321,908.30
  6. Step 6: Final answer
    x = 295,890.35

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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.