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Finding the Fourth Proportional to 307,998.42, 425,013.81 and 178,915.52

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Solution

The fourth proportional to 307,998.42, 425,013.81 and 178,915.52 is: 246,889.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,998.42 : 425,013.81 = 178,915.52 : x
  2. Step 2: Convert to fraction form
    307,998.42/425,013.81 = 178,915.52/x
  3. Step 3: Cross multiply
    307,998.42x = 425,013.81 × 178,915.52
  4. Step 4: Simplify right side
    307,998.42x = 76,041,564,698.26
  5. Step 5: Solve for x
    x = 76,041,564,698.26/307,998.42
  6. Step 6: Final answer
    x = 246,889.46

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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.