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Finding the Fourth Proportional to 252,289.69, 348,159.40 and 139,112.71

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Solution

The fourth proportional to 252,289.69, 348,159.40 and 139,112.71 is: 191,975.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,289.69 : 348,159.40 = 139,112.71 : x
  2. Step 2: Convert to fraction form
    252,289.69/348,159.40 = 139,112.71/x
  3. Step 3: Cross multiply
    252,289.69x = 348,159.40 × 139,112.71
  4. Step 4: Simplify right side
    252,289.69x = 48,433,397,645.97
  5. Step 5: Solve for x
    x = 48,433,397,645.97/252,289.69
  6. Step 6: Final answer
    x = 191,975.33

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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.