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Finding the Fourth Proportional to 479,194.46, 661,500.90 and 309,511.34

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Solution

The fourth proportional to 479,194.46, 661,500.90 and 309,511.34 is: 427,262.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,194.46 : 661,500.90 = 309,511.34 : x
  2. Step 2: Convert to fraction form
    479,194.46/661,500.90 = 309,511.34/x
  3. Step 3: Cross multiply
    479,194.46x = 661,500.90 × 309,511.34
  4. Step 4: Simplify right side
    479,194.46x = 204,742,029,970.21
  5. Step 5: Solve for x
    x = 204,742,029,970.21/479,194.46
  6. Step 6: Final answer
    x = 427,262.93

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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.