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Finding the Fourth Proportional to 225,742.59, 311,556.51 and 139,729.17

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Solution

The fourth proportional to 225,742.59, 311,556.51 and 139,729.17 is: 192,845.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,742.59 : 311,556.51 = 139,729.17 : x
  2. Step 2: Convert to fraction form
    225,742.59/311,556.51 = 139,729.17/x
  3. Step 3: Cross multiply
    225,742.59x = 311,556.51 × 139,729.17
  4. Step 4: Simplify right side
    225,742.59x = 43,533,532,550.40
  5. Step 5: Solve for x
    x = 43,533,532,550.40/225,742.59
  6. Step 6: Final answer
    x = 192,845.90

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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.