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Finding the Fourth Proportional to 371,698.76, 557,569.32 and 105,438.44

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Solution

The fourth proportional to 371,698.76, 557,569.32 and 105,438.44 is: 158,163.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,698.76 : 557,569.32 = 105,438.44 : x
  2. Step 2: Convert to fraction form
    371,698.76/557,569.32 = 105,438.44/x
  3. Step 3: Cross multiply
    371,698.76x = 557,569.32 × 105,438.44
  4. Step 4: Simplify right side
    371,698.76x = 58,789,239,292.66
  5. Step 5: Solve for x
    x = 58,789,239,292.66/371,698.76
  6. Step 6: Final answer
    x = 158,163.67

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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.