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Finding the Fourth Proportional to 307,760.40, 461,932.20 and 263,437.20

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Solution

The fourth proportional to 307,760.40, 461,932.20 and 263,437.20 is: 395,405.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,760.40 : 461,932.20 = 263,437.20 : x
  2. Step 2: Convert to fraction form
    307,760.40/461,932.20 = 263,437.20/x
  3. Step 3: Cross multiply
    307,760.40x = 461,932.20 × 263,437.20
  4. Step 4: Simplify right side
    307,760.40x = 121,690,125,357.84
  5. Step 5: Solve for x
    x = 121,690,125,357.84/307,760.40
  6. Step 6: Final answer
    x = 395,405.40

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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.