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Finding the Fourth Proportional to 315,086.07, 434,813.50 and 171,837.57

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Solution

The fourth proportional to 315,086.07, 434,813.50 and 171,837.57 is: 237,132.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,086.07 : 434,813.50 = 171,837.57 : x
  2. Step 2: Convert to fraction form
    315,086.07/434,813.50 = 171,837.57/x
  3. Step 3: Cross multiply
    315,086.07x = 434,813.50 × 171,837.57
  4. Step 4: Simplify right side
    315,086.07x = 74,717,295,243.20
  5. Step 5: Solve for x
    x = 74,717,295,243.20/315,086.07
  6. Step 6: Final answer
    x = 237,132.97

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1.5x scale

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.