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Finding the Fourth Proportional to 219,490.72, 302,898.36 and 118,888.72

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Solution

The fourth proportional to 219,490.72, 302,898.36 and 118,888.72 is: 164,067.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,490.72 : 302,898.36 = 118,888.72 : x
  2. Step 2: Convert to fraction form
    219,490.72/302,898.36 = 118,888.72/x
  3. Step 3: Cross multiply
    219,490.72x = 302,898.36 × 118,888.72
  4. Step 4: Simplify right side
    219,490.72x = 36,011,198,310.50
  5. Step 5: Solve for x
    x = 36,011,198,310.50/219,490.72
  6. Step 6: Final answer
    x = 164,067.07

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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.