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Finding the Fourth Proportional to 209,641.46, 313,871.64 and 188,383.82

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Solution

The fourth proportional to 209,641.46, 313,871.64 and 188,383.82 is: 282,045.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,641.46 : 313,871.64 = 188,383.82 : x
  2. Step 2: Convert to fraction form
    209,641.46/313,871.64 = 188,383.82/x
  3. Step 3: Cross multiply
    209,641.46x = 313,871.64 × 188,383.82
  4. Step 4: Simplify right side
    209,641.46x = 59,128,336,963.51
  5. Step 5: Solve for x
    x = 59,128,336,963.51/209,641.46
  6. Step 6: Final answer
    x = 282,045.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.