Home / 215,999.04-324,143.19-89,639.40

Finding the Fourth Proportional to 215,999.04, 324,143.19 and 89,639.40

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Solution

The fourth proportional to 215,999.04, 324,143.19 and 89,639.40 is: 134,519.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,999.04 : 324,143.19 = 89,639.40 : x
  2. Step 2: Convert to fraction form
    215,999.04/324,143.19 = 89,639.40/x
  3. Step 3: Cross multiply
    215,999.04x = 324,143.19 × 89,639.40
  4. Step 4: Simplify right side
    215,999.04x = 29,056,001,065.69
  5. Step 5: Solve for x
    x = 29,056,001,065.69/215,999.04
  6. Step 6: Final answer
    x = 134,519.12

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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.