Home / 279,928.44-420,055.28-117,810.56

Finding the Fourth Proportional to 279,928.44, 420,055.28 and 117,810.56

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Solution

The fourth proportional to 279,928.44, 420,055.28 and 117,810.56 is: 176,784.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,928.44 : 420,055.28 = 117,810.56 : x
  2. Step 2: Convert to fraction form
    279,928.44/420,055.28 = 117,810.56/x
  3. Step 3: Cross multiply
    279,928.44x = 420,055.28 × 117,810.56
  4. Step 4: Simplify right side
    279,928.44x = 49,486,947,767.76
  5. Step 5: Solve for x
    x = 49,486,947,767.76/279,928.44
  6. Step 6: Final answer
    x = 176,784.28

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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.