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Finding the Fourth Proportional to 307,841.70, 461,762.55 and 189,128.10

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Solution

The fourth proportional to 307,841.70, 461,762.55 and 189,128.10 is: 283,692.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,841.70 : 461,762.55 = 189,128.10 : x
  2. Step 2: Convert to fraction form
    307,841.70/461,762.55 = 189,128.10/x
  3. Step 3: Cross multiply
    307,841.70x = 461,762.55 × 189,128.10
  4. Step 4: Simplify right side
    307,841.70x = 87,332,273,732.66
  5. Step 5: Solve for x
    x = 87,332,273,732.66/307,841.70
  6. Step 6: Final answer
    x = 283,692.15

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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.