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Finding the Fourth Proportional to 328,225.70, 492,338.66 and 103,608.86

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Solution

The fourth proportional to 328,225.70, 492,338.66 and 103,608.86 is: 155,413.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,225.70 : 492,338.66 = 103,608.86 : x
  2. Step 2: Convert to fraction form
    328,225.70/492,338.66 = 103,608.86/x
  3. Step 3: Cross multiply
    328,225.70x = 492,338.66 × 103,608.86
  4. Step 4: Simplify right side
    328,225.70x = 51,010,647,296.53
  5. Step 5: Solve for x
    x = 51,010,647,296.53/328,225.70
  6. Step 6: Final answer
    x = 155,413.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.