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Finding the Fourth Proportional to 547,321.92, 755,317.08 and 305,596.32

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Solution

The fourth proportional to 547,321.92, 755,317.08 and 305,596.32 is: 421,730.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,321.92 : 755,317.08 = 305,596.32 : x
  2. Step 2: Convert to fraction form
    547,321.92/755,317.08 = 305,596.32/x
  3. Step 3: Cross multiply
    547,321.92x = 755,317.08 × 305,596.32
  4. Step 4: Simplify right side
    547,321.92x = 230,822,120,081.15
  5. Step 5: Solve for x
    x = 230,822,120,081.15/547,321.92
  6. Step 6: Final answer
    x = 421,730.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.