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Finding the Fourth Proportional to 308,650.70, 425,913.69 and 172,673.98

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Solution

The fourth proportional to 308,650.70, 425,913.69 and 172,673.98 is: 238,276.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,650.70 : 425,913.69 = 172,673.98 : x
  2. Step 2: Convert to fraction form
    308,650.70/425,913.69 = 172,673.98/x
  3. Step 3: Cross multiply
    308,650.70x = 425,913.69 × 172,673.98
  4. Step 4: Simplify right side
    308,650.70x = 73,544,211,571.53
  5. Step 5: Solve for x
    x = 73,544,211,571.53/308,650.70
  6. Step 6: Final answer
    x = 238,276.51

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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.