Home / 209,831.78-289,558.79-119,187.46

Finding the Fourth Proportional to 209,831.78, 289,558.79 and 119,187.46

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Solution

The fourth proportional to 209,831.78, 289,558.79 and 119,187.46 is: 164,473.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,831.78 : 289,558.79 = 119,187.46 : x
  2. Step 2: Convert to fraction form
    209,831.78/289,558.79 = 119,187.46/x
  3. Step 3: Cross multiply
    209,831.78x = 289,558.79 × 119,187.46
  4. Step 4: Simplify right side
    209,831.78x = 34,511,776,700.77
  5. Step 5: Solve for x
    x = 34,511,776,700.77/209,831.78
  6. Step 6: Final answer
    x = 164,473.54

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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.