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Finding the Fourth Proportional to 315,469.53, 435,349.43 and 172,232.86

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Solution

The fourth proportional to 315,469.53, 435,349.43 and 172,232.86 is: 237,682.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,469.53 : 435,349.43 = 172,232.86 : x
  2. Step 2: Convert to fraction form
    315,469.53/435,349.43 = 172,232.86/x
  3. Step 3: Cross multiply
    315,469.53x = 435,349.43 × 172,232.86
  4. Step 4: Simplify right side
    315,469.53x = 74,981,477,428.27
  5. Step 5: Solve for x
    x = 74,981,477,428.27/315,469.53
  6. Step 6: Final answer
    x = 237,682.15

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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.