Home / 399,631.89-599,684.25-147,089.75

Finding the Fourth Proportional to 399,631.89, 599,684.25 and 147,089.75

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Solution

The fourth proportional to 399,631.89, 599,684.25 and 147,089.75 is: 220,721.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,631.89 : 599,684.25 = 147,089.75 : x
  2. Step 2: Convert to fraction form
    399,631.89/599,684.25 = 147,089.75/x
  3. Step 3: Cross multiply
    399,631.89x = 599,684.25 × 147,089.75
  4. Step 4: Simplify right side
    399,631.89x = 88,207,403,413.02
  5. Step 5: Solve for x
    x = 88,207,403,413.02/399,631.89
  6. Step 6: Final answer
    x = 220,721.63

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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.