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Finding the Fourth Proportional to 343,908.96, 515,786.22 and 144,454.56

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Solution

The fourth proportional to 343,908.96, 515,786.22 and 144,454.56 is: 216,649.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,908.96 : 515,786.22 = 144,454.56 : x
  2. Step 2: Convert to fraction form
    343,908.96/515,786.22 = 144,454.56/x
  3. Step 3: Cross multiply
    343,908.96x = 515,786.22 × 144,454.56
  4. Step 4: Simplify right side
    343,908.96x = 74,507,671,464.16
  5. Step 5: Solve for x
    x = 74,507,671,464.16/343,908.96
  6. Step 6: Final answer
    x = 216,649.40

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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.