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Finding the Fourth Proportional to 315,172.98, 434,938.08 and 171,932.97

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Solution

The fourth proportional to 315,172.98, 434,938.08 and 171,932.97 is: 237,267.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,172.98 : 434,938.08 = 171,932.97 : x
  2. Step 2: Convert to fraction form
    315,172.98/434,938.08 = 171,932.97/x
  3. Step 3: Cross multiply
    315,172.98x = 434,938.08 × 171,932.97
  4. Step 4: Simplify right side
    315,172.98x = 74,780,195,860.50
  5. Step 5: Solve for x
    x = 74,780,195,860.50/315,172.98
  6. Step 6: Final answer
    x = 237,267.15

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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.