Home / 217,831.10-300,622.87-122,343.42

Finding the Fourth Proportional to 217,831.10, 300,622.87 and 122,343.42

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Solution

The fourth proportional to 217,831.10, 300,622.87 and 122,343.42 is: 168,842.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,831.10 : 300,622.87 = 122,343.42 : x
  2. Step 2: Convert to fraction form
    217,831.10/300,622.87 = 122,343.42/x
  3. Step 3: Cross multiply
    217,831.10x = 300,622.87 × 122,343.42
  4. Step 4: Simplify right side
    217,831.10x = 36,779,230,046.02
  5. Step 5: Solve for x
    x = 36,779,230,046.02/217,831.10
  6. Step 6: Final answer
    x = 168,842.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.