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Finding the Fourth Proportional to 354,756.98, 489,745.23 and 274,003.22

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Solution

The fourth proportional to 354,756.98, 489,745.23 and 274,003.22 is: 378,263.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,756.98 : 489,745.23 = 274,003.22 : x
  2. Step 2: Convert to fraction form
    354,756.98/489,745.23 = 274,003.22/x
  3. Step 3: Cross multiply
    354,756.98x = 489,745.23 × 274,003.22
  4. Step 4: Simplify right side
    354,756.98x = 134,191,769,999.64
  5. Step 5: Solve for x
    x = 134,191,769,999.64/354,756.98
  6. Step 6: Final answer
    x = 378,263.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.