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Finding the Fourth Proportional to 307,557.80, 461,336.70 and 257,791.40

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Solution

The fourth proportional to 307,557.80, 461,336.70 and 257,791.40 is: 386,687.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,557.80 : 461,336.70 = 257,791.40 : x
  2. Step 2: Convert to fraction form
    307,557.80/461,336.70 = 257,791.40/x
  3. Step 3: Cross multiply
    307,557.80x = 461,336.70 × 257,791.40
  4. Step 4: Simplify right side
    307,557.80x = 118,928,633,764.38
  5. Step 5: Solve for x
    x = 118,928,633,764.38/307,557.80
  6. Step 6: Final answer
    x = 386,687.10

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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.