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Finding the Fourth Proportional to 253,193.05, 349,355.86 and 139,993.93

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Solution

The fourth proportional to 253,193.05, 349,355.86 and 139,993.93 is: 193,163.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,193.05 : 349,355.86 = 139,993.93 : x
  2. Step 2: Convert to fraction form
    253,193.05/349,355.86 = 139,993.93/x
  3. Step 3: Cross multiply
    253,193.05x = 349,355.86 × 139,993.93
  4. Step 4: Simplify right side
    253,193.05x = 48,907,699,809.93
  5. Step 5: Solve for x
    x = 48,907,699,809.93/253,193.05
  6. Step 6: Final answer
    x = 193,163.67

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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.