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Finding the Fourth Proportional to 307,456.77, 461,240.60 and 139,056.69

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Solution

The fourth proportional to 307,456.77, 461,240.60 and 139,056.69 is: 208,610.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,456.77 : 461,240.60 = 139,056.69 : x
  2. Step 2: Convert to fraction form
    307,456.77/461,240.60 = 139,056.69/x
  3. Step 3: Cross multiply
    307,456.77x = 461,240.60 × 139,056.69
  4. Step 4: Simplify right side
    307,456.77x = 64,138,591,129.61
  5. Step 5: Solve for x
    x = 64,138,591,129.61/307,456.77
  6. Step 6: Final answer
    x = 208,610.11

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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.