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Finding the Fourth Proportional to 252,489.48, 348,437.34 and 139,316.28

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Solution

The fourth proportional to 252,489.48, 348,437.34 and 139,316.28 is: 192,257.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,489.48 : 348,437.34 = 139,316.28 : x
  2. Step 2: Convert to fraction form
    252,489.48/348,437.34 = 139,316.28/x
  3. Step 3: Cross multiply
    252,489.48x = 348,437.34 × 139,316.28
  4. Step 4: Simplify right side
    252,489.48x = 48,542,994,021.90
  5. Step 5: Solve for x
    x = 48,542,994,021.90/252,489.48
  6. Step 6: Final answer
    x = 192,257.49

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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.