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Finding the Fourth Proportional to 315,047.51, 434,791.40 and 179,124.11

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Solution

The fourth proportional to 315,047.51, 434,791.40 and 179,124.11 is: 247,205.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,047.51 : 434,791.40 = 179,124.11 : x
  2. Step 2: Convert to fraction form
    315,047.51/434,791.40 = 179,124.11/x
  3. Step 3: Cross multiply
    315,047.51x = 434,791.40 × 179,124.11
  4. Step 4: Simplify right side
    315,047.51x = 77,881,621,121.54
  5. Step 5: Solve for x
    x = 77,881,621,121.54/315,047.51
  6. Step 6: Final answer
    x = 247,205.96

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Why These Related Problems?

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