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Finding the Fourth Proportional to 519,317.20, 779,413.20 and 204,000.40

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Solution

The fourth proportional to 519,317.20, 779,413.20 and 204,000.40 is: 306,172.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,317.20 : 779,413.20 = 204,000.40 : x
  2. Step 2: Convert to fraction form
    519,317.20/779,413.20 = 204,000.40/x
  3. Step 3: Cross multiply
    519,317.20x = 779,413.20 × 204,000.40
  4. Step 4: Simplify right side
    519,317.20x = 159,000,604,565.28
  5. Step 5: Solve for x
    x = 159,000,604,565.28/519,317.20
  6. Step 6: Final answer
    x = 306,172.42

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Similar ratio
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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.