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Finding the Fourth Proportional to 315,375.53, 473,138.62 and 105,015.29

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Solution

The fourth proportional to 315,375.53, 473,138.62 and 105,015.29 is: 157,548.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,375.53 : 473,138.62 = 105,015.29 : x
  2. Step 2: Convert to fraction form
    315,375.53/473,138.62 = 105,015.29/x
  3. Step 3: Cross multiply
    315,375.53x = 473,138.62 × 105,015.29
  4. Step 4: Simplify right side
    315,375.53x = 49,686,786,761.27
  5. Step 5: Solve for x
    x = 49,686,786,761.27/315,375.53
  6. Step 6: Final answer
    x = 157,548.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.