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Finding the Fourth Proportional to 218,710.13, 301,819.97 and 118,108.13

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Solution

The fourth proportional to 218,710.13, 301,819.97 and 118,108.13 is: 162,989.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,710.13 : 301,819.97 = 118,108.13 : x
  2. Step 2: Convert to fraction form
    218,710.13/301,819.97 = 118,108.13/x
  3. Step 3: Cross multiply
    218,710.13x = 301,819.97 × 118,108.13
  4. Step 4: Simplify right side
    218,710.13x = 35,647,391,039.53
  5. Step 5: Solve for x
    x = 35,647,391,039.53/218,710.13
  6. Step 6: Final answer
    x = 162,989.21

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1.5x scale

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.