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Finding the Fourth Proportional to 315,231.40, 472,890.30 and 104,847.40

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Solution

The fourth proportional to 315,231.40, 472,890.30 and 104,847.40 is: 157,285.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,231.40 : 472,890.30 = 104,847.40 : x
  2. Step 2: Convert to fraction form
    315,231.40/472,890.30 = 104,847.40/x
  3. Step 3: Cross multiply
    315,231.40x = 472,890.30 × 104,847.40
  4. Step 4: Simplify right side
    315,231.40x = 49,581,318,440.22
  5. Step 5: Solve for x
    x = 49,581,318,440.22/315,231.40
  6. Step 6: Final answer
    x = 157,285.47

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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.