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Finding the Fourth Proportional to 315,019.91, 434,717.97 and 171,782.75

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Solution

The fourth proportional to 315,019.91, 434,717.97 and 171,782.75 is: 237,055.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,019.91 : 434,717.97 = 171,782.75 : x
  2. Step 2: Convert to fraction form
    315,019.91/434,717.97 = 171,782.75/x
  3. Step 3: Cross multiply
    315,019.91x = 434,717.97 × 171,782.75
  4. Step 4: Simplify right side
    315,019.91x = 74,677,048,361.02
  5. Step 5: Solve for x
    x = 74,677,048,361.02/315,019.91
  6. Step 6: Final answer
    x = 237,055.01

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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.