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Finding the Fourth Proportional to 449,645.72, 620,503.74 and 245,692.17

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Solution

The fourth proportional to 449,645.72, 620,503.74 and 245,692.17 is: 339,051.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,645.72 : 620,503.74 = 245,692.17 : x
  2. Step 2: Convert to fraction form
    449,645.72/620,503.74 = 245,692.17/x
  3. Step 3: Cross multiply
    449,645.72x = 620,503.74 × 245,692.17
  4. Step 4: Simplify right side
    449,645.72x = 152,452,910,373.72
  5. Step 5: Solve for x
    x = 152,452,910,373.72/449,645.72
  6. Step 6: Final answer
    x = 339,051.18

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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.