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Finding the Fourth Proportional to 449,963, 620,961.90 and 248,771.96

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Solution

The fourth proportional to 449,963, 620,961.90 and 248,771.96 is: 343,312.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,963 : 620,961.90 = 248,771.96 : x
  2. Step 2: Convert to fraction form
    449,963/620,961.90 = 248,771.96/x
  3. Step 3: Cross multiply
    449,963x = 620,961.90 × 248,771.96
  4. Step 4: Simplify right side
    449,963x = 154,477,908,948.32
  5. Step 5: Solve for x
    x = 154,477,908,948.32/449,963
  6. Step 6: Final answer
    x = 343,312.47

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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.