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Finding the Fourth Proportional to 578,430.80, 867,775.80 and 223,413.20

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Solution

The fourth proportional to 578,430.80, 867,775.80 and 223,413.20 is: 335,169.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,430.80 : 867,775.80 = 223,413.20 : x
  2. Step 2: Convert to fraction form
    578,430.80/867,775.80 = 223,413.20/x
  3. Step 3: Cross multiply
    578,430.80x = 867,775.80 × 223,413.20
  4. Step 4: Simplify right side
    578,430.80x = 193,872,568,360.56
  5. Step 5: Solve for x
    x = 193,872,568,360.56/578,430.80
  6. Step 6: Final answer
    x = 335,169.86

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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.