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Finding the Fourth Proportional to 236,693.77, 326,640 and 129,266.96

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Solution

The fourth proportional to 236,693.77, 326,640 and 129,266.96 is: 178,389.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,693.77 : 326,640 = 129,266.96 : x
  2. Step 2: Convert to fraction form
    236,693.77/326,640 = 129,266.96/x
  3. Step 3: Cross multiply
    236,693.77x = 326,640 × 129,266.96
  4. Step 4: Simplify right side
    236,693.77x = 42,223,759,814.40
  5. Step 5: Solve for x
    x = 42,223,759,814.40/236,693.77
  6. Step 6: Final answer
    x = 178,389.82

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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.