Home / 215,998.29-324,142.08-89,638.65

Finding the Fourth Proportional to 215,998.29, 324,142.08 and 89,638.65

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Solution

The fourth proportional to 215,998.29, 324,142.08 and 89,638.65 is: 134,518.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,998.29 : 324,142.08 = 89,638.65 : x
  2. Step 2: Convert to fraction form
    215,998.29/324,142.08 = 89,638.65/x
  3. Step 3: Cross multiply
    215,998.29x = 324,142.08 × 89,638.65
  4. Step 4: Simplify right side
    215,998.29x = 29,055,658,459.39
  5. Step 5: Solve for x
    x = 29,055,658,459.39/215,998.29
  6. Step 6: Final answer
    x = 134,518.00

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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.