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Finding the Fourth Proportional to 285,548.48, 394,040.46 and 156,461.71

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Solution

The fourth proportional to 285,548.48, 394,040.46 and 156,461.71 is: 215,908.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,548.48 : 394,040.46 = 156,461.71 : x
  2. Step 2: Convert to fraction form
    285,548.48/394,040.46 = 156,461.71/x
  3. Step 3: Cross multiply
    285,548.48x = 394,040.46 × 156,461.71
  4. Step 4: Simplify right side
    285,548.48x = 61,652,244,180.79
  5. Step 5: Solve for x
    x = 61,652,244,180.79/285,548.48
  6. Step 6: Final answer
    x = 215,908.15

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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.