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Finding the Fourth Proportional to 438,742.62, 605,460.15 and 247,744.86

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Solution

The fourth proportional to 438,742.62, 605,460.15 and 247,744.86 is: 341,885.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,742.62 : 605,460.15 = 247,744.86 : x
  2. Step 2: Convert to fraction form
    438,742.62/605,460.15 = 247,744.86/x
  3. Step 3: Cross multiply
    438,742.62x = 605,460.15 × 247,744.86
  4. Step 4: Simplify right side
    438,742.62x = 149,999,640,097.33
  5. Step 5: Solve for x
    x = 149,999,640,097.33/438,742.62
  6. Step 6: Final answer
    x = 341,885.27

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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.