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Finding the Fourth Proportional to 449,290.70, 620,158.47 and 277,261.28

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Solution

The fourth proportional to 449,290.70, 620,158.47 and 277,261.28 is: 382,705.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,290.70 : 620,158.47 = 277,261.28 : x
  2. Step 2: Convert to fraction form
    449,290.70/620,158.47 = 277,261.28/x
  3. Step 3: Cross multiply
    449,290.70x = 620,158.47 × 277,261.28
  4. Step 4: Simplify right side
    449,290.70x = 171,945,931,195.04
  5. Step 5: Solve for x
    x = 171,945,931,195.04/449,290.70
  6. Step 6: Final answer
    x = 382,705.30

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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.