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Finding the Fourth Proportional to 486,563.66, 671,224.91 and 305,184.81

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Solution

The fourth proportional to 486,563.66, 671,224.91 and 305,184.81 is: 421,008.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,563.66 : 671,224.91 = 305,184.81 : x
  2. Step 2: Convert to fraction form
    486,563.66/671,224.91 = 305,184.81/x
  3. Step 3: Cross multiply
    486,563.66x = 671,224.91 × 305,184.81
  4. Step 4: Simplify right side
    486,563.66x = 204,847,645,099.69
  5. Step 5: Solve for x
    x = 204,847,645,099.69/486,563.66
  6. Step 6: Final answer
    x = 421,008.93

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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.