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Finding the Fourth Proportional to 307,954.40, 462,392.40 and 214,872.80

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Solution

The fourth proportional to 307,954.40, 462,392.40 and 214,872.80 is: 322,630.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,954.40 : 462,392.40 = 214,872.80 : x
  2. Step 2: Convert to fraction form
    307,954.40/462,392.40 = 214,872.80/x
  3. Step 3: Cross multiply
    307,954.40x = 462,392.40 × 214,872.80
  4. Step 4: Simplify right side
    307,954.40x = 99,355,549,686.72
  5. Step 5: Solve for x
    x = 99,355,549,686.72/307,954.40
  6. Step 6: Final answer
    x = 322,630.72

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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.