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Finding the Fourth Proportional to 301,246.80, 451,870.20 and 90,857.40

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Solution

The fourth proportional to 301,246.80, 451,870.20 and 90,857.40 is: 136,286.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,246.80 : 451,870.20 = 90,857.40 : x
  2. Step 2: Convert to fraction form
    301,246.80/451,870.20 = 90,857.40/x
  3. Step 3: Cross multiply
    301,246.80x = 451,870.20 × 90,857.40
  4. Step 4: Simplify right side
    301,246.80x = 41,055,751,509.48
  5. Step 5: Solve for x
    x = 41,055,751,509.48/301,246.80
  6. Step 6: Final answer
    x = 136,286.10

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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.