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Finding the Fourth Proportional to 449,220.51, 619,978.67 and 255,675.28

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Solution

The fourth proportional to 449,220.51, 619,978.67 and 255,675.28 is: 352,862.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,220.51 : 619,978.67 = 255,675.28 : x
  2. Step 2: Convert to fraction form
    449,220.51/619,978.67 = 255,675.28/x
  3. Step 3: Cross multiply
    449,220.51x = 619,978.67 × 255,675.28
  4. Step 4: Simplify right side
    449,220.51x = 158,513,220,046.28
  5. Step 5: Solve for x
    x = 158,513,220,046.28/449,220.51
  6. Step 6: Final answer
    x = 352,862.83

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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.