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Finding the Fourth Proportional to 235,994.93, 325,671.72 and 128,564.70

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Solution

The fourth proportional to 235,994.93, 325,671.72 and 128,564.70 is: 177,418.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,994.93 : 325,671.72 = 128,564.70 : x
  2. Step 2: Convert to fraction form
    235,994.93/325,671.72 = 128,564.70/x
  3. Step 3: Cross multiply
    235,994.93x = 325,671.72 × 128,564.70
  4. Step 4: Simplify right side
    235,994.93x = 41,869,886,980.28
  5. Step 5: Solve for x
    x = 41,869,886,980.28/235,994.93
  6. Step 6: Final answer
    x = 177,418.59

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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.