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Finding the Fourth Proportional to 339,297.70, 508,946.55 and 313,636.90

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Solution

The fourth proportional to 339,297.70, 508,946.55 and 313,636.90 is: 470,455.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,297.70 : 508,946.55 = 313,636.90 : x
  2. Step 2: Convert to fraction form
    339,297.70/508,946.55 = 313,636.90/x
  3. Step 3: Cross multiply
    339,297.70x = 508,946.55 × 313,636.90
  4. Step 4: Simplify right side
    339,297.70x = 159,624,418,207.70
  5. Step 5: Solve for x
    x = 159,624,418,207.70/339,297.70
  6. Step 6: Final answer
    x = 470,455.35

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Similar ratio
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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.