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Finding the Fourth Proportional to 500,715.81, 751,074.26 and 126,738.81

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Solution

The fourth proportional to 500,715.81, 751,074.26 and 126,738.81 is: 190,108.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,715.81 : 751,074.26 = 126,738.81 : x
  2. Step 2: Convert to fraction form
    500,715.81/751,074.26 = 126,738.81/x
  3. Step 3: Cross multiply
    500,715.81x = 751,074.26 × 126,738.81
  4. Step 4: Simplify right side
    500,715.81x = 95,190,257,300.34
  5. Step 5: Solve for x
    x = 95,190,257,300.34/500,715.81
  6. Step 6: Final answer
    x = 190,108.35

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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.