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Finding the Fourth Proportional to 303,346.32, 455,019.72 and 81,730.32

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Solution

The fourth proportional to 303,346.32, 455,019.72 and 81,730.32 is: 122,595.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,346.32 : 455,019.72 = 81,730.32 : x
  2. Step 2: Convert to fraction form
    303,346.32/455,019.72 = 81,730.32/x
  3. Step 3: Cross multiply
    303,346.32x = 455,019.72 × 81,730.32
  4. Step 4: Simplify right side
    303,346.32x = 37,188,907,321.91
  5. Step 5: Solve for x
    x = 37,188,907,321.91/303,346.32
  6. Step 6: Final answer
    x = 122,595.54

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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.