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Finding the Fourth Proportional to 247,321.05, 370,981.58 and 213,495.45

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Solution

The fourth proportional to 247,321.05, 370,981.58 and 213,495.45 is: 320,243.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,321.05 : 370,981.58 = 213,495.45 : x
  2. Step 2: Convert to fraction form
    247,321.05/370,981.58 = 213,495.45/x
  3. Step 3: Cross multiply
    247,321.05x = 370,981.58 × 213,495.45
  4. Step 4: Simplify right side
    247,321.05x = 79,202,878,296.33
  5. Step 5: Solve for x
    x = 79,202,878,296.33/247,321.05
  6. Step 6: Final answer
    x = 320,243.18

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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.