Home / 318,900.06-478,350.68-299,413.89

Finding the Fourth Proportional to 318,900.06, 478,350.68 and 299,413.89

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Solution

The fourth proportional to 318,900.06, 478,350.68 and 299,413.89 is: 449,121.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,900.06 : 478,350.68 = 299,413.89 : x
  2. Step 2: Convert to fraction form
    318,900.06/478,350.68 = 299,413.89/x
  3. Step 3: Cross multiply
    318,900.06x = 478,350.68 × 299,413.89
  4. Step 4: Simplify right side
    318,900.06x = 143,224,836,385.88
  5. Step 5: Solve for x
    x = 143,224,836,385.88/318,900.06
  6. Step 6: Final answer
    x = 449,121.38

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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.