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Finding the Fourth Proportional to 449,790.03, 620,693.28 and 245,839.30

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Solution

The fourth proportional to 449,790.03, 620,693.28 and 245,839.30 is: 339,248.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,790.03 : 620,693.28 = 245,839.30 : x
  2. Step 2: Convert to fraction form
    449,790.03/620,693.28 = 245,839.30/x
  3. Step 3: Cross multiply
    449,790.03x = 620,693.28 × 245,839.30
  4. Step 4: Simplify right side
    449,790.03x = 152,590,799,918.17
  5. Step 5: Solve for x
    x = 152,590,799,918.17/449,790.03
  6. Step 6: Final answer
    x = 339,248.96

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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.