Home / 318,942.20-478,413.30-97,326.20

Finding the Fourth Proportional to 318,942.20, 478,413.30 and 97,326.20

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Solution

The fourth proportional to 318,942.20, 478,413.30 and 97,326.20 is: 145,989.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,942.20 : 478,413.30 = 97,326.20 : x
  2. Step 2: Convert to fraction form
    318,942.20/478,413.30 = 97,326.20/x
  3. Step 3: Cross multiply
    318,942.20x = 478,413.30 × 97,326.20
  4. Step 4: Simplify right side
    318,942.20x = 46,562,148,518.46
  5. Step 5: Solve for x
    x = 46,562,148,518.46/318,942.20
  6. Step 6: Final answer
    x = 145,989.30

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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.