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Finding the Fourth Proportional to 315,072, 434,782 and 179,087.04

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Solution

The fourth proportional to 315,072, 434,782 and 179,087.04 is: 247,130.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,072 : 434,782 = 179,087.04 : x
  2. Step 2: Convert to fraction form
    315,072/434,782 = 179,087.04/x
  3. Step 3: Cross multiply
    315,072x = 434,782 × 179,087.04
  4. Step 4: Simplify right side
    315,072x = 77,863,821,425.28
  5. Step 5: Solve for x
    x = 77,863,821,425.28/315,072
  6. Step 6: Final answer
    x = 247,130.25

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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.