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Finding the Fourth Proportional to 425,093.50, 637,724.34 and 121,490.38

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Solution

The fourth proportional to 425,093.50, 637,724.34 and 121,490.38 is: 182,259.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,093.50 : 637,724.34 = 121,490.38 : x
  2. Step 2: Convert to fraction form
    425,093.50/637,724.34 = 121,490.38/x
  3. Step 3: Cross multiply
    425,093.50x = 637,724.34 × 121,490.38
  4. Step 4: Simplify right side
    425,093.50x = 77,477,372,401.85
  5. Step 5: Solve for x
    x = 77,477,372,401.85/425,093.50
  6. Step 6: Final answer
    x = 182,259.60

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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.