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Finding the Fourth Proportional to 291,223.91, 436,770.02 and 113,639.51

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Solution

The fourth proportional to 291,223.91, 436,770.02 and 113,639.51 is: 170,433.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,223.91 : 436,770.02 = 113,639.51 : x
  2. Step 2: Convert to fraction form
    291,223.91/436,770.02 = 113,639.51/x
  3. Step 3: Cross multiply
    291,223.91x = 436,770.02 × 113,639.51
  4. Step 4: Simplify right side
    291,223.91x = 49,634,332,431.51
  5. Step 5: Solve for x
    x = 49,634,332,431.51/291,223.91
  6. Step 6: Final answer
    x = 170,433.57

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1.5x scale

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.