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Finding the Fourth Proportional to 298,136.49, 446,918.59 and 191,221.35

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Solution

The fourth proportional to 298,136.49, 446,918.59 and 191,221.35 is: 286,648.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,136.49 : 446,918.59 = 191,221.35 : x
  2. Step 2: Convert to fraction form
    298,136.49/446,918.59 = 191,221.35/x
  3. Step 3: Cross multiply
    298,136.49x = 446,918.59 × 191,221.35
  4. Step 4: Simplify right side
    298,136.49x = 85,460,376,119.90
  5. Step 5: Solve for x
    x = 85,460,376,119.90/298,136.49
  6. Step 6: Final answer
    x = 286,648.49

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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.