Home / 312,215.12-468,237.60-87,561.62

Finding the Fourth Proportional to 312,215.12, 468,237.60 and 87,561.62

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Solution

The fourth proportional to 312,215.12, 468,237.60 and 87,561.62 is: 131,318.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,215.12 : 468,237.60 = 87,561.62 : x
  2. Step 2: Convert to fraction form
    312,215.12/468,237.60 = 87,561.62/x
  3. Step 3: Cross multiply
    312,215.12x = 468,237.60 × 87,561.62
  4. Step 4: Simplify right side
    312,215.12x = 40,999,640,459.72
  5. Step 5: Solve for x
    x = 40,999,640,459.72/312,215.12
  6. Step 6: Final answer
    x = 131,318.56

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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.