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Finding the Fourth Proportional to 252,039, 347,813.85 and 138,864.18

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Solution

The fourth proportional to 252,039, 347,813.85 and 138,864.18 is: 191,632.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,039 : 347,813.85 = 138,864.18 : x
  2. Step 2: Convert to fraction form
    252,039/347,813.85 = 138,864.18/x
  3. Step 3: Cross multiply
    252,039x = 347,813.85 × 138,864.18
  4. Step 4: Simplify right side
    252,039x = 48,298,885,072.89
  5. Step 5: Solve for x
    x = 48,298,885,072.89/252,039
  6. Step 6: Final answer
    x = 191,632.58

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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.