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Finding the Fourth Proportional to 284,195.82, 392,190.27 and 156,871.44

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Solution

The fourth proportional to 284,195.82, 392,190.27 and 156,871.44 is: 216,482.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,195.82 : 392,190.27 = 156,871.44 : x
  2. Step 2: Convert to fraction form
    284,195.82/392,190.27 = 156,871.44/x
  3. Step 3: Cross multiply
    284,195.82x = 392,190.27 × 156,871.44
  4. Step 4: Simplify right side
    284,195.82x = 61,523,452,408.89
  5. Step 5: Solve for x
    x = 61,523,452,408.89/284,195.82
  6. Step 6: Final answer
    x = 216,482.61

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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.