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Finding the Fourth Proportional to 547,996.89, 756,271.18 and 306,289.65

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Solution

The fourth proportional to 547,996.89, 756,271.18 and 306,289.65 is: 422,699.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,996.89 : 756,271.18 = 306,289.65 : x
  2. Step 2: Convert to fraction form
    547,996.89/756,271.18 = 306,289.65/x
  3. Step 3: Cross multiply
    547,996.89x = 756,271.18 × 306,289.65
  4. Step 4: Simplify right side
    547,996.89x = 231,638,035,027.29
  5. Step 5: Solve for x
    x = 231,638,035,027.29/547,996.89
  6. Step 6: Final answer
    x = 422,699.54

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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.