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Finding the Fourth Proportional to 328,553.22, 492,857.48 and 103,908.65

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Solution

The fourth proportional to 328,553.22, 492,857.48 and 103,908.65 is: 155,871.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,553.22 : 492,857.48 = 103,908.65 : x
  2. Step 2: Convert to fraction form
    328,553.22/492,857.48 = 103,908.65/x
  3. Step 3: Cross multiply
    328,553.22x = 492,857.48 × 103,908.65
  4. Step 4: Simplify right side
    328,553.22x = 51,212,156,881.12
  5. Step 5: Solve for x
    x = 51,212,156,881.12/328,553.22
  6. Step 6: Final answer
    x = 155,871.72

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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.