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Finding the Fourth Proportional to 379,716.12, 569,597.67 and 139,894.56

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Solution

The fourth proportional to 379,716.12, 569,597.67 and 139,894.56 is: 209,850.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,716.12 : 569,597.67 = 139,894.56 : x
  2. Step 2: Convert to fraction form
    379,716.12/569,597.67 = 139,894.56/x
  3. Step 3: Cross multiply
    379,716.12x = 569,597.67 × 139,894.56
  4. Step 4: Simplify right side
    379,716.12x = 79,683,615,421.68
  5. Step 5: Solve for x
    x = 79,683,615,421.68/379,716.12
  6. Step 6: Final answer
    x = 209,850.49

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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.