Home / 225,413.72-311,071.04-123,445.54

Finding the Fourth Proportional to 225,413.72, 311,071.04 and 123,445.54

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Solution

The fourth proportional to 225,413.72, 311,071.04 and 123,445.54 is: 170,354.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,413.72 : 311,071.04 = 123,445.54 : x
  2. Step 2: Convert to fraction form
    225,413.72/311,071.04 = 123,445.54/x
  3. Step 3: Cross multiply
    225,413.72x = 311,071.04 × 123,445.54
  4. Step 4: Simplify right side
    225,413.72x = 38,400,330,338.58
  5. Step 5: Solve for x
    x = 38,400,330,338.58/225,413.72
  6. Step 6: Final answer
    x = 170,354.89

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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.