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Finding the Fourth Proportional to 247,314.30, 370,971.45 and 213,488.70

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Solution

The fourth proportional to 247,314.30, 370,971.45 and 213,488.70 is: 320,233.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,314.30 : 370,971.45 = 213,488.70 : x
  2. Step 2: Convert to fraction form
    247,314.30/370,971.45 = 213,488.70/x
  3. Step 3: Cross multiply
    247,314.30x = 370,971.45 × 213,488.70
  4. Step 4: Simplify right side
    247,314.30x = 79,198,212,597.62
  5. Step 5: Solve for x
    x = 79,198,212,597.62/247,314.30
  6. Step 6: Final answer
    x = 320,233.05

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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.