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Finding the Fourth Proportional to 340,939.75, 470,698.68 and 303,109.51

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Solution

The fourth proportional to 340,939.75, 470,698.68 and 303,109.51 is: 418,470.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,939.75 : 470,698.68 = 303,109.51 : x
  2. Step 2: Convert to fraction form
    340,939.75/470,698.68 = 303,109.51/x
  3. Step 3: Cross multiply
    340,939.75x = 470,698.68 × 303,109.51
  4. Step 4: Simplify right side
    340,939.75x = 142,673,246,252.45
  5. Step 5: Solve for x
    x = 142,673,246,252.45/340,939.75
  6. Step 6: Final answer
    x = 418,470.55

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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.