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Finding the Fourth Proportional to 236,880, 326,894.40 and 130,896

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Solution

The fourth proportional to 236,880, 326,894.40 and 130,896 is: 180,636.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,880 : 326,894.40 = 130,896 : x
  2. Step 2: Convert to fraction form
    236,880/326,894.40 = 130,896/x
  3. Step 3: Cross multiply
    236,880x = 326,894.40 × 130,896
  4. Step 4: Simplify right side
    236,880x = 42,789,169,382.40
  5. Step 5: Solve for x
    x = 42,789,169,382.40/236,880
  6. Step 6: Final answer
    x = 180,636.48

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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.