Home / 305,109.44-420,964-176,037.68

Finding the Fourth Proportional to 305,109.44, 420,964 and 176,037.68

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Solution

The fourth proportional to 305,109.44, 420,964 and 176,037.68 is: 242,881.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,109.44 : 420,964 = 176,037.68 : x
  2. Step 2: Convert to fraction form
    305,109.44/420,964 = 176,037.68/x
  3. Step 3: Cross multiply
    305,109.44x = 420,964 × 176,037.68
  4. Step 4: Simplify right side
    305,109.44x = 74,105,525,923.52
  5. Step 5: Solve for x
    x = 74,105,525,923.52/305,109.44
  6. Step 6: Final answer
    x = 242,881.79

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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.