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Finding the Fourth Proportional to 328,918.82, 453,908.02 and 178,015.82

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Solution

The fourth proportional to 328,918.82, 453,908.02 and 178,015.82 is: 245,661.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,918.82 : 453,908.02 = 178,015.82 : x
  2. Step 2: Convert to fraction form
    328,918.82/453,908.02 = 178,015.82/x
  3. Step 3: Cross multiply
    328,918.82x = 453,908.02 × 178,015.82
  4. Step 4: Simplify right side
    328,918.82x = 80,802,808,384.88
  5. Step 5: Solve for x
    x = 80,802,808,384.88/328,918.82
  6. Step 6: Final answer
    x = 245,661.86

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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.