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Finding the Fourth Proportional to 312,480.04, 468,709.26 and 87,842.20

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Solution

The fourth proportional to 312,480.04, 468,709.26 and 87,842.20 is: 131,760.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,480.04 : 468,709.26 = 87,842.20 : x
  2. Step 2: Convert to fraction form
    312,480.04/468,709.26 = 87,842.20/x
  3. Step 3: Cross multiply
    312,480.04x = 468,709.26 × 87,842.20
  4. Step 4: Simplify right side
    312,480.04x = 41,172,452,558.77
  5. Step 5: Solve for x
    x = 41,172,452,558.77/312,480.04
  6. Step 6: Final answer
    x = 131,760.26

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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.