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Finding the Fourth Proportional to 347,003.70, 520,019.55 and 276,047.70

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Solution

The fourth proportional to 347,003.70, 520,019.55 and 276,047.70 is: 413,684.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,003.70 : 520,019.55 = 276,047.70 : x
  2. Step 2: Convert to fraction form
    347,003.70/520,019.55 = 276,047.70/x
  3. Step 3: Cross multiply
    347,003.70x = 520,019.55 × 276,047.70
  4. Step 4: Simplify right side
    347,003.70x = 143,550,200,732.54
  5. Step 5: Solve for x
    x = 143,550,200,732.54/347,003.70
  6. Step 6: Final answer
    x = 413,684.93

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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.