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Finding the Fourth Proportional to 476,956.40, 658,056.30 and 285,900.08

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Solution

The fourth proportional to 476,956.40, 658,056.30 and 285,900.08 is: 394,456.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,956.40 : 658,056.30 = 285,900.08 : x
  2. Step 2: Convert to fraction form
    476,956.40/658,056.30 = 285,900.08/x
  3. Step 3: Cross multiply
    476,956.40x = 658,056.30 × 285,900.08
  4. Step 4: Simplify right side
    476,956.40x = 188,138,348,814.50
  5. Step 5: Solve for x
    x = 188,138,348,814.50/476,956.40
  6. Step 6: Final answer
    x = 394,456.07

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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.