Home / 390,566.10-585,337.20-222,163.86

Finding the Fourth Proportional to 390,566.10, 585,337.20 and 222,163.86

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Solution

The fourth proportional to 390,566.10, 585,337.20 and 222,163.86 is: 332,954.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,566.10 : 585,337.20 = 222,163.86 : x
  2. Step 2: Convert to fraction form
    390,566.10/585,337.20 = 222,163.86/x
  3. Step 3: Cross multiply
    390,566.10x = 585,337.20 × 222,163.86
  4. Step 4: Simplify right side
    390,566.10x = 130,040,771,753.59
  5. Step 5: Solve for x
    x = 130,040,771,753.59/390,566.10
  6. Step 6: Final answer
    x = 332,954.58

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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.