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Finding the Fourth Proportional to 315,074.52, 434,798.15 and 171,834.26

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Solution

The fourth proportional to 315,074.52, 434,798.15 and 171,834.26 is: 237,128.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,074.52 : 434,798.15 = 171,834.26 : x
  2. Step 2: Convert to fraction form
    315,074.52/434,798.15 = 171,834.26/x
  3. Step 3: Cross multiply
    315,074.52x = 434,798.15 × 171,834.26
  4. Step 4: Simplify right side
    315,074.52x = 74,713,215,321.46
  5. Step 5: Solve for x
    x = 74,713,215,321.46/315,074.52
  6. Step 6: Final answer
    x = 237,128.71

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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.