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Finding the Fourth Proportional to 300,995.60, 415,291.25 and 186,219.10

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Solution

The fourth proportional to 300,995.60, 415,291.25 and 186,219.10 is: 256,931.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,995.60 : 415,291.25 = 186,219.10 : x
  2. Step 2: Convert to fraction form
    300,995.60/415,291.25 = 186,219.10/x
  3. Step 3: Cross multiply
    300,995.60x = 415,291.25 × 186,219.10
  4. Step 4: Simplify right side
    300,995.60x = 77,335,163,797.54
  5. Step 5: Solve for x
    x = 77,335,163,797.54/300,995.60
  6. Step 6: Final answer
    x = 256,931.21

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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.