Home / 638,015.12-957,170.76-217,294.64

Finding the Fourth Proportional to 638,015.12, 957,170.76 and 217,294.64

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Solution

The fourth proportional to 638,015.12, 957,170.76 and 217,294.64 is: 325,992.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,015.12 : 957,170.76 = 217,294.64 : x
  2. Step 2: Convert to fraction form
    638,015.12/957,170.76 = 217,294.64/x
  3. Step 3: Cross multiply
    638,015.12x = 957,170.76 × 217,294.64
  4. Step 4: Simplify right side
    638,015.12x = 207,988,075,712.73
  5. Step 5: Solve for x
    x = 207,988,075,712.73/638,015.12
  6. Step 6: Final answer
    x = 325,992.39

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Similar ratio
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1.5x scale

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.