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Finding the Fourth Proportional to 307,523.20, 461,284.80 and 141,311.20

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Solution

The fourth proportional to 307,523.20, 461,284.80 and 141,311.20 is: 211,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,523.20 : 461,284.80 = 141,311.20 : x
  2. Step 2: Convert to fraction form
    307,523.20/461,284.80 = 141,311.20/x
  3. Step 3: Cross multiply
    307,523.20x = 461,284.80 × 141,311.20
  4. Step 4: Simplify right side
    307,523.20x = 65,184,708,629.76
  5. Step 5: Solve for x
    x = 65,184,708,629.76/307,523.20
  6. Step 6: Final answer
    x = 211,966.80

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Similar ratio
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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.