Home / 218,815.84-301,966.68-138,279.16

Finding the Fourth Proportional to 218,815.84, 301,966.68 and 138,279.16

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Solution

The fourth proportional to 218,815.84, 301,966.68 and 138,279.16 is: 190,825.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,815.84 : 301,966.68 = 138,279.16 : x
  2. Step 2: Convert to fraction form
    218,815.84/301,966.68 = 138,279.16/x
  3. Step 3: Cross multiply
    218,815.84x = 301,966.68 × 138,279.16
  4. Step 4: Simplify right side
    218,815.84x = 41,755,698,858.39
  5. Step 5: Solve for x
    x = 41,755,698,858.39/218,815.84
  6. Step 6: Final answer
    x = 190,825.76

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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.