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Finding the Fourth Proportional to 235,807.95, 325,413.02 and 128,377.76

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Solution

The fourth proportional to 235,807.95, 325,413.02 and 128,377.76 is: 177,160.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,807.95 : 325,413.02 = 128,377.76 : x
  2. Step 2: Convert to fraction form
    235,807.95/325,413.02 = 128,377.76/x
  3. Step 3: Cross multiply
    235,807.95x = 325,413.02 × 128,377.76
  4. Step 4: Simplify right side
    235,807.95x = 41,775,793,940.55
  5. Step 5: Solve for x
    x = 41,775,793,940.55/235,807.95
  6. Step 6: Final answer
    x = 177,160.24

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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.