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Finding the Fourth Proportional to 217,192.59, 299,676.90 and 131,165.58

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Solution

The fourth proportional to 217,192.59, 299,676.90 and 131,165.58 is: 180,978.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,192.59 : 299,676.90 = 131,165.58 : x
  2. Step 2: Convert to fraction form
    217,192.59/299,676.90 = 131,165.58/x
  3. Step 3: Cross multiply
    217,192.59x = 299,676.90 × 131,165.58
  4. Step 4: Simplify right side
    217,192.59x = 39,307,294,401.10
  5. Step 5: Solve for x
    x = 39,307,294,401.10/217,192.59
  6. Step 6: Final answer
    x = 180,978.98

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1.5x scale

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.