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Finding the Fourth Proportional to 235,786, 325,384.72 and 128,356.84

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Solution

The fourth proportional to 235,786, 325,384.72 and 128,356.84 is: 177,132.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,786 : 325,384.72 = 128,356.84 : x
  2. Step 2: Convert to fraction form
    235,786/325,384.72 = 128,356.84/x
  3. Step 3: Cross multiply
    235,786x = 325,384.72 × 128,356.84
  4. Step 4: Simplify right side
    235,786x = 41,765,354,443.48
  5. Step 5: Solve for x
    x = 41,765,354,443.48/235,786
  6. Step 6: Final answer
    x = 177,132.46

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