Home / 231,478.04-347,128.94-81,690.42

Finding the Fourth Proportional to 231,478.04, 347,128.94 and 81,690.42

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Solution

The fourth proportional to 231,478.04, 347,128.94 and 81,690.42 is: 122,504.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,478.04 : 347,128.94 = 81,690.42 : x
  2. Step 2: Convert to fraction form
    231,478.04/347,128.94 = 81,690.42/x
  3. Step 3: Cross multiply
    231,478.04x = 347,128.94 × 81,690.42
  4. Step 4: Simplify right side
    231,478.04x = 28,357,108,902.75
  5. Step 5: Solve for x
    x = 28,357,108,902.75/231,478.04
  6. Step 6: Final answer
    x = 122,504.53

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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.