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Finding the Fourth Proportional to 354,590.10, 531,885.15 and 321,930.90

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Solution

The fourth proportional to 354,590.10, 531,885.15 and 321,930.90 is: 482,896.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,590.10 : 531,885.15 = 321,930.90 : x
  2. Step 2: Convert to fraction form
    354,590.10/531,885.15 = 321,930.90/x
  3. Step 3: Cross multiply
    354,590.10x = 531,885.15 × 321,930.90
  4. Step 4: Simplify right side
    354,590.10x = 171,230,265,036.14
  5. Step 5: Solve for x
    x = 171,230,265,036.14/354,590.10
  6. Step 6: Final answer
    x = 482,896.35

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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.