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Finding the Fourth Proportional to 307,965.70, 461,948.55 and 290,469.70

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Solution

The fourth proportional to 307,965.70, 461,948.55 and 290,469.70 is: 435,704.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,965.70 : 461,948.55 = 290,469.70 : x
  2. Step 2: Convert to fraction form
    307,965.70/461,948.55 = 290,469.70/x
  3. Step 3: Cross multiply
    307,965.70x = 461,948.55 × 290,469.70
  4. Step 4: Simplify right side
    307,965.70x = 134,182,056,733.94
  5. Step 5: Solve for x
    x = 134,182,056,733.94/307,965.70
  6. Step 6: Final answer
    x = 435,704.55

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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.