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Finding the Fourth Proportional to 218,686.34, 301,793.37 and 210,754.82

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Solution

The fourth proportional to 218,686.34, 301,793.37 and 210,754.82 is: 290,847.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,686.34 : 301,793.37 = 210,754.82 : x
  2. Step 2: Convert to fraction form
    218,686.34/301,793.37 = 210,754.82/x
  3. Step 3: Cross multiply
    218,686.34x = 301,793.37 × 210,754.82
  4. Step 4: Simplify right side
    218,686.34x = 63,604,407,371.54
  5. Step 5: Solve for x
    x = 63,604,407,371.54/218,686.34
  6. Step 6: Final answer
    x = 290,847.65

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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.