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Finding the Fourth Proportional to 219,278.78, 302,604.72 and 118,676.78

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Solution

The fourth proportional to 219,278.78, 302,604.72 and 118,676.78 is: 163,773.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,278.78 : 302,604.72 = 118,676.78 : x
  2. Step 2: Convert to fraction form
    219,278.78/302,604.72 = 118,676.78/x
  3. Step 3: Cross multiply
    219,278.78x = 302,604.72 × 118,676.78
  4. Step 4: Simplify right side
    219,278.78x = 35,912,153,782.40
  5. Step 5: Solve for x
    x = 35,912,153,782.40/219,278.78
  6. Step 6: Final answer
    x = 163,773.96

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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.