Home / 498,413.20-747,546.90-143,390.20

Finding the Fourth Proportional to 498,413.20, 747,546.90 and 143,390.20

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Solution

The fourth proportional to 498,413.20, 747,546.90 and 143,390.20 is: 215,064.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,413.20 : 747,546.90 = 143,390.20 : x
  2. Step 2: Convert to fraction form
    498,413.20/747,546.90 = 143,390.20/x
  3. Step 3: Cross multiply
    498,413.20x = 747,546.90 × 143,390.20
  4. Step 4: Simplify right side
    498,413.20x = 107,190,899,500.38
  5. Step 5: Solve for x
    x = 107,190,899,500.38/498,413.20
  6. Step 6: Final answer
    x = 215,064.33

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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.