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Finding the Fourth Proportional to 426,329.02, 638,938.23 and 173,313.98

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Solution

The fourth proportional to 426,329.02, 638,938.23 and 173,313.98 is: 259,745.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,329.02 : 638,938.23 = 173,313.98 : x
  2. Step 2: Convert to fraction form
    426,329.02/638,938.23 = 173,313.98/x
  3. Step 3: Cross multiply
    426,329.02x = 638,938.23 × 173,313.98
  4. Step 4: Simplify right side
    426,329.02x = 110,736,926,166.86
  5. Step 5: Solve for x
    x = 110,736,926,166.86/426,329.02
  6. Step 6: Final answer
    x = 259,745.22

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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.