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Finding the Fourth Proportional to 479,196.46, 661,503.66 and 309,513.34

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Solution

The fourth proportional to 479,196.46, 661,503.66 and 309,513.34 is: 427,265.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,196.46 : 661,503.66 = 309,513.34 : x
  2. Step 2: Convert to fraction form
    479,196.46/661,503.66 = 309,513.34/x
  3. Step 3: Cross multiply
    479,196.46x = 661,503.66 × 309,513.34
  4. Step 4: Simplify right side
    479,196.46x = 204,744,207,228.82
  5. Step 5: Solve for x
    x = 204,744,207,228.82/479,196.46
  6. Step 6: Final answer
    x = 427,265.69

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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.