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Finding the Fourth Proportional to 339,566.70, 468,406.89 and 212,020.86

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Solution

The fourth proportional to 339,566.70, 468,406.89 and 212,020.86 is: 292,466.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,566.70 : 468,406.89 = 212,020.86 : x
  2. Step 2: Convert to fraction form
    339,566.70/468,406.89 = 212,020.86/x
  3. Step 3: Cross multiply
    339,566.70x = 468,406.89 × 212,020.86
  4. Step 4: Simplify right side
    339,566.70x = 99,312,031,647.73
  5. Step 5: Solve for x
    x = 99,312,031,647.73/339,566.70
  6. Step 6: Final answer
    x = 292,466.93

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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.