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Finding the Fourth Proportional to 328,203.60, 492,305.24 and 103,586.55

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Solution

The fourth proportional to 328,203.60, 492,305.24 and 103,586.55 is: 155,379.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,203.60 : 492,305.24 = 103,586.55 : x
  2. Step 2: Convert to fraction form
    328,203.60/492,305.24 = 103,586.55/x
  3. Step 3: Cross multiply
    328,203.60x = 492,305.24 × 103,586.55
  4. Step 4: Simplify right side
    328,203.60x = 50,996,199,771.34
  5. Step 5: Solve for x
    x = 50,996,199,771.34/328,203.60
  6. Step 6: Final answer
    x = 155,379.77

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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.