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Finding the Fourth Proportional to 236,776, 326,746.78 and 129,343.27

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Solution

The fourth proportional to 236,776, 326,746.78 and 129,343.27 is: 178,491.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,776 : 326,746.78 = 129,343.27 : x
  2. Step 2: Convert to fraction form
    236,776/326,746.78 = 129,343.27/x
  3. Step 3: Cross multiply
    236,776x = 326,746.78 × 129,343.27
  4. Step 4: Simplify right side
    236,776x = 42,262,496,987.17
  5. Step 5: Solve for x
    x = 42,262,496,987.17/236,776
  6. Step 6: Final answer
    x = 178,491.47

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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.