Home / 328,419.36-492,629.28-79,101.60

Finding the Fourth Proportional to 328,419.36, 492,629.28 and 79,101.60

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Solution

The fourth proportional to 328,419.36, 492,629.28 and 79,101.60 is: 118,652.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,419.36 : 492,629.28 = 79,101.60 : x
  2. Step 2: Convert to fraction form
    328,419.36/492,629.28 = 79,101.60/x
  3. Step 3: Cross multiply
    328,419.36x = 492,629.28 × 79,101.60
  4. Step 4: Simplify right side
    328,419.36x = 38,967,764,254.85
  5. Step 5: Solve for x
    x = 38,967,764,254.85/328,419.36
  6. Step 6: Final answer
    x = 118,652.46

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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.