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Finding the Fourth Proportional to 313,486.43, 432,743.63 and 211,649.76

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Solution

The fourth proportional to 313,486.43, 432,743.63 and 211,649.76 is: 292,166.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,486.43 : 432,743.63 = 211,649.76 : x
  2. Step 2: Convert to fraction form
    313,486.43/432,743.63 = 211,649.76/x
  3. Step 3: Cross multiply
    313,486.43x = 432,743.63 × 211,649.76
  4. Step 4: Simplify right side
    313,486.43x = 91,590,084,372.78
  5. Step 5: Solve for x
    x = 91,590,084,372.78/313,486.43
  6. Step 6: Final answer
    x = 292,166.03

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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.