Home / 389,318.40-582,811.20-231,465.60

Finding the Fourth Proportional to 389,318.40, 582,811.20 and 231,465.60

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Solution

The fourth proportional to 389,318.40, 582,811.20 and 231,465.60 is: 346,504.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,318.40 : 582,811.20 = 231,465.60 : x
  2. Step 2: Convert to fraction form
    389,318.40/582,811.20 = 231,465.60/x
  3. Step 3: Cross multiply
    389,318.40x = 582,811.20 × 231,465.60
  4. Step 4: Simplify right side
    389,318.40x = 134,900,744,094.72
  5. Step 5: Solve for x
    x = 134,900,744,094.72/389,318.40
  6. Step 6: Final answer
    x = 346,504.93

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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.