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Finding the Fourth Proportional to 285,372.84, 393,780.76 and 164,553.82

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Solution

The fourth proportional to 285,372.84, 393,780.76 and 164,553.82 is: 227,064.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,372.84 : 393,780.76 = 164,553.82 : x
  2. Step 2: Convert to fraction form
    285,372.84/393,780.76 = 164,553.82/x
  3. Step 3: Cross multiply
    285,372.84x = 393,780.76 × 164,553.82
  4. Step 4: Simplify right side
    285,372.84x = 64,798,128,300.50
  5. Step 5: Solve for x
    x = 64,798,128,300.50/285,372.84
  6. Step 6: Final answer
    x = 227,064.81

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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.