Home / 278,831.16-418,011.57-120,940.65

Finding the Fourth Proportional to 278,831.16, 418,011.57 and 120,940.65

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Solution

The fourth proportional to 278,831.16, 418,011.57 and 120,940.65 is: 181,308.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,831.16 : 418,011.57 = 120,940.65 : x
  2. Step 2: Convert to fraction form
    278,831.16/418,011.57 = 120,940.65/x
  3. Step 3: Cross multiply
    278,831.16x = 418,011.57 × 120,940.65
  4. Step 4: Simplify right side
    278,831.16x = 50,554,590,983.32
  5. Step 5: Solve for x
    x = 50,554,590,983.32/278,831.16
  6. Step 6: Final answer
    x = 181,308.97

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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.