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Finding the Fourth Proportional to 252,186.94, 348,020.31 and 139,013.74

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Solution

The fourth proportional to 252,186.94, 348,020.31 and 139,013.74 is: 191,840.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,186.94 : 348,020.31 = 139,013.74 : x
  2. Step 2: Convert to fraction form
    252,186.94/348,020.31 = 139,013.74/x
  3. Step 3: Cross multiply
    252,186.94x = 348,020.31 × 139,013.74
  4. Step 4: Simplify right side
    252,186.94x = 48,379,604,889.06
  5. Step 5: Solve for x
    x = 48,379,604,889.06/252,186.94
  6. Step 6: Final answer
    x = 191,840.25

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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.