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Finding the Fourth Proportional to 200,831.40, 301,036.91 and 67,665.65

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Solution

The fourth proportional to 200,831.40, 301,036.91 and 67,665.65 is: 101,427.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,831.40 : 301,036.91 = 67,665.65 : x
  2. Step 2: Convert to fraction form
    200,831.40/301,036.91 = 67,665.65/x
  3. Step 3: Cross multiply
    200,831.40x = 301,036.91 × 67,665.65
  4. Step 4: Simplify right side
    200,831.40x = 20,369,856,345.63
  5. Step 5: Solve for x
    x = 20,369,856,345.63/200,831.40
  6. Step 6: Final answer
    x = 101,427.65

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1.5x scale

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.