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Finding the Fourth Proportional to 315,173.70, 472,764.47 and 104,811.57

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Solution

The fourth proportional to 315,173.70, 472,764.47 and 104,811.57 is: 157,218.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,173.70 : 472,764.47 = 104,811.57 : x
  2. Step 2: Convert to fraction form
    315,173.70/472,764.47 = 104,811.57/x
  3. Step 3: Cross multiply
    315,173.70x = 472,764.47 × 104,811.57
  4. Step 4: Simplify right side
    315,173.70x = 49,551,185,816.86
  5. Step 5: Solve for x
    x = 49,551,185,816.86/315,173.70
  6. Step 6: Final answer
    x = 157,218.66

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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.