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Finding the Fourth Proportional to 235,173.36, 324,530 and 139,677.60

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Solution

The fourth proportional to 235,173.36, 324,530 and 139,677.60 is: 192,749.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,173.36 : 324,530 = 139,677.60 : x
  2. Step 2: Convert to fraction form
    235,173.36/324,530 = 139,677.60/x
  3. Step 3: Cross multiply
    235,173.36x = 324,530 × 139,677.60
  4. Step 4: Simplify right side
    235,173.36x = 45,329,571,528
  5. Step 5: Solve for x
    x = 45,329,571,528/235,173.36
  6. Step 6: Final answer
    x = 192,749.60

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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.