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Finding the Fourth Proportional to 548,010.72, 756,251.64 and 306,292.86

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Solution

The fourth proportional to 548,010.72, 756,251.64 and 306,292.86 is: 422,682.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,010.72 : 756,251.64 = 306,292.86 : x
  2. Step 2: Convert to fraction form
    548,010.72/756,251.64 = 306,292.86/x
  3. Step 3: Cross multiply
    548,010.72x = 756,251.64 × 306,292.86
  4. Step 4: Simplify right side
    548,010.72x = 231,634,477,695.29
  5. Step 5: Solve for x
    x = 231,634,477,695.29/548,010.72
  6. Step 6: Final answer
    x = 422,682.38

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Similar ratio
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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.