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Finding the Fourth Proportional to 315,151.38, 434,911.68 and 171,912.06

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Solution

The fourth proportional to 315,151.38, 434,911.68 and 171,912.06 is: 237,240.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,151.38 : 434,911.68 = 171,912.06 : x
  2. Step 2: Convert to fraction form
    315,151.38/434,911.68 = 171,912.06/x
  3. Step 3: Cross multiply
    315,151.38x = 434,911.68 × 171,912.06
  4. Step 4: Simplify right side
    315,151.38x = 74,766,562,826.86
  5. Step 5: Solve for x
    x = 74,766,562,826.86/315,151.38
  6. Step 6: Final answer
    x = 237,240.16

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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.