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Finding the Fourth Proportional to 425,222.44, 637,856.94 and 172,465.38

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Solution

The fourth proportional to 425,222.44, 637,856.94 and 172,465.38 is: 258,707.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,222.44 : 637,856.94 = 172,465.38 : x
  2. Step 2: Convert to fraction form
    425,222.44/637,856.94 = 172,465.38/x
  3. Step 3: Cross multiply
    425,222.44x = 637,856.94 × 172,465.38
  4. Step 4: Simplify right side
    425,222.44x = 110,008,239,542.74
  5. Step 5: Solve for x
    x = 110,008,239,542.74/425,222.44
  6. Step 6: Final answer
    x = 258,707.51

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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.