Home / 209,952,313.80-314,928,470.70-128,322,976.20

Finding the Fourth Proportional to 209,952,313.80, 314,928,470.70 and 128,322,976.20

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Solution

The fourth proportional to 209,952,313.80, 314,928,470.70 and 128,322,976.20 is: 192,484,464.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,952,313.80 : 314,928,470.70 = 128,322,976.20 : x
  2. Step 2: Convert to fraction form
    209,952,313.80/314,928,470.70 = 128,322,976.20/x
  3. Step 3: Cross multiply
    209,952,313.80x = 314,928,470.70 × 128,322,976.20
  4. Step 4: Simplify right side
    209,952,313.80x = 40,412,558,650,338,496
  5. Step 5: Solve for x
    x = 40,412,558,650,338,496/209,952,313.80
  6. Step 6: Final answer
    x = 192,484,464.30

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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.