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Finding the Fourth Proportional to 438,779.98, 658,194.59 and 123,212.28

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Solution

The fourth proportional to 438,779.98, 658,194.59 and 123,212.28 is: 184,825.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,779.98 : 658,194.59 = 123,212.28 : x
  2. Step 2: Convert to fraction form
    438,779.98/658,194.59 = 123,212.28/x
  3. Step 3: Cross multiply
    438,779.98x = 658,194.59 × 123,212.28
  4. Step 4: Simplify right side
    438,779.98x = 81,097,656,117.57
  5. Step 5: Solve for x
    x = 81,097,656,117.57/438,779.98
  6. Step 6: Final answer
    x = 184,825.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.