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Finding the Fourth Proportional to 390,096.12, 585,329.22 and 270,337.26

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Solution

The fourth proportional to 390,096.12, 585,329.22 and 270,337.26 is: 405,634.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,096.12 : 585,329.22 = 270,337.26 : x
  2. Step 2: Convert to fraction form
    390,096.12/585,329.22 = 270,337.26/x
  3. Step 3: Cross multiply
    390,096.12x = 585,329.22 × 270,337.26
  4. Step 4: Simplify right side
    390,096.12x = 158,236,297,532.74
  5. Step 5: Solve for x
    x = 158,236,297,532.74/390,096.12
  6. Step 6: Final answer
    x = 405,634.12

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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.