Home / 351,865.20-485,188.85-261,389.01

Finding the Fourth Proportional to 351,865.20, 485,188.85 and 261,389.01

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Solution

The fourth proportional to 351,865.20, 485,188.85 and 261,389.01 is: 360,430.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,865.20 : 485,188.85 = 261,389.01 : x
  2. Step 2: Convert to fraction form
    351,865.20/485,188.85 = 261,389.01/x
  3. Step 3: Cross multiply
    351,865.20x = 485,188.85 × 261,389.01
  4. Step 4: Simplify right side
    351,865.20x = 126,823,033,164.54
  5. Step 5: Solve for x
    x = 126,823,033,164.54/351,865.20
  6. Step 6: Final answer
    x = 360,430.74

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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.