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Finding the Fourth Proportional to 328,576.66, 492,895.04 and 91,918.64

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Solution

The fourth proportional to 328,576.66, 492,895.04 and 91,918.64 is: 137,886.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,576.66 : 492,895.04 = 91,918.64 : x
  2. Step 2: Convert to fraction form
    328,576.66/492,895.04 = 91,918.64/x
  3. Step 3: Cross multiply
    328,576.66x = 492,895.04 × 91,918.64
  4. Step 4: Simplify right side
    328,576.66x = 45,306,242,512.19
  5. Step 5: Solve for x
    x = 45,306,242,512.19/328,576.66
  6. Step 6: Final answer
    x = 137,886.37

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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.