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Finding the Fourth Proportional to 518,072.28, 714,940.92 and 300,322.95

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Solution

The fourth proportional to 518,072.28, 714,940.92 and 300,322.95 is: 414,446.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,072.28 : 714,940.92 = 300,322.95 : x
  2. Step 2: Convert to fraction form
    518,072.28/714,940.92 = 300,322.95/x
  3. Step 3: Cross multiply
    518,072.28x = 714,940.92 × 300,322.95
  4. Step 4: Simplify right side
    518,072.28x = 214,713,166,170.11
  5. Step 5: Solve for x
    x = 214,713,166,170.11/518,072.28
  6. Step 6: Final answer
    x = 414,446.35

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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.