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Finding the Fourth Proportional to 317,158.65, 437,678.69 and 171,969.25

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Solution

The fourth proportional to 317,158.65, 437,678.69 and 171,969.25 is: 237,317.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,158.65 : 437,678.69 = 171,969.25 : x
  2. Step 2: Convert to fraction form
    317,158.65/437,678.69 = 171,969.25/x
  3. Step 3: Cross multiply
    317,158.65x = 437,678.69 × 171,969.25
  4. Step 4: Simplify right side
    317,158.65x = 75,267,274,751.12
  5. Step 5: Solve for x
    x = 75,267,274,751.12/317,158.65
  6. Step 6: Final answer
    x = 237,317.42

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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.