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Finding the Fourth Proportional to 307,063.05, 423,747.89 and 178,026.60

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Solution

The fourth proportional to 307,063.05, 423,747.89 and 178,026.60 is: 245,677.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,063.05 : 423,747.89 = 178,026.60 : x
  2. Step 2: Convert to fraction form
    307,063.05/423,747.89 = 178,026.60/x
  3. Step 3: Cross multiply
    307,063.05x = 423,747.89 × 178,026.60
  4. Step 4: Simplify right side
    307,063.05x = 75,438,395,223.74
  5. Step 5: Solve for x
    x = 75,438,395,223.74/307,063.05
  6. Step 6: Final answer
    x = 245,677.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.