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Finding the Fourth Proportional to 550,266.39, 759,407.96 and 305,289.67

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Solution

The fourth proportional to 550,266.39, 759,407.96 and 305,289.67 is: 421,322.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,266.39 : 759,407.96 = 305,289.67 : x
  2. Step 2: Convert to fraction form
    550,266.39/759,407.96 = 305,289.67/x
  3. Step 3: Cross multiply
    550,266.39x = 759,407.96 × 305,289.67
  4. Step 4: Simplify right side
    550,266.39x = 231,839,404,368.48
  5. Step 5: Solve for x
    x = 231,839,404,368.48/550,266.39
  6. Step 6: Final answer
    x = 421,322.12

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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.