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Finding the Fourth Proportional to 315,138.04, 434,896.38 and 171,903.16

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Solution

The fourth proportional to 315,138.04, 434,896.38 and 171,903.16 is: 237,229.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,138.04 : 434,896.38 = 171,903.16 : x
  2. Step 2: Convert to fraction form
    315,138.04/434,896.38 = 171,903.16/x
  3. Step 3: Cross multiply
    315,138.04x = 434,896.38 × 171,903.16
  4. Step 4: Simplify right side
    315,138.04x = 74,760,061,994.56
  5. Step 5: Solve for x
    x = 74,760,061,994.56/315,138.04
  6. Step 6: Final answer
    x = 237,229.57

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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.