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Finding the Fourth Proportional to 328,485.58, 492,728.37 and 79,167.58

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Solution

The fourth proportional to 328,485.58, 492,728.37 and 79,167.58 is: 118,751.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,485.58 : 492,728.37 = 79,167.58 : x
  2. Step 2: Convert to fraction form
    328,485.58/492,728.37 = 79,167.58/x
  3. Step 3: Cross multiply
    328,485.58x = 492,728.37 × 79,167.58
  4. Step 4: Simplify right side
    328,485.58x = 39,008,111,121.55
  5. Step 5: Solve for x
    x = 39,008,111,121.55/328,485.58
  6. Step 6: Final answer
    x = 118,751.37

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1.5x scale

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.