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Finding the Fourth Proportional to 315,166.21, 434,928.78 and 171,926.21

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Solution

The fourth proportional to 315,166.21, 434,928.78 and 171,926.21 is: 237,257.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,166.21 : 434,928.78 = 171,926.21 : x
  2. Step 2: Convert to fraction form
    315,166.21/434,928.78 = 171,926.21/x
  3. Step 3: Cross multiply
    315,166.21x = 434,928.78 × 171,926.21
  4. Step 4: Simplify right side
    315,166.21x = 74,775,657,852.65
  5. Step 5: Solve for x
    x = 74,775,657,852.65/315,166.21
  6. Step 6: Final answer
    x = 237,257.85

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.