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Finding the Fourth Proportional to 548,013.72, 756,255.78 and 306,295.86

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Solution

The fourth proportional to 548,013.72, 756,255.78 and 306,295.86 is: 422,686.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,013.72 : 756,255.78 = 306,295.86 : x
  2. Step 2: Convert to fraction form
    548,013.72/756,255.78 = 306,295.86/x
  3. Step 3: Cross multiply
    548,013.72x = 756,255.78 × 306,295.86
  4. Step 4: Simplify right side
    548,013.72x = 231,638,014,515.07
  5. Step 5: Solve for x
    x = 231,638,014,515.07/548,013.72
  6. Step 6: Final answer
    x = 422,686.52

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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.