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Finding the Fourth Proportional to 235,814.14, 325,413.30 and 128,384.56

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Solution

The fourth proportional to 235,814.14, 325,413.30 and 128,384.56 is: 177,165.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,814.14 : 325,413.30 = 128,384.56 : x
  2. Step 2: Convert to fraction form
    235,814.14/325,413.30 = 128,384.56/x
  3. Step 3: Cross multiply
    235,814.14x = 325,413.30 × 128,384.56
  4. Step 4: Simplify right side
    235,814.14x = 41,778,043,338.65
  5. Step 5: Solve for x
    x = 41,778,043,338.65/235,814.14
  6. Step 6: Final answer
    x = 177,165.13

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1.5x scale

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.