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Finding the Fourth Proportional to 219,487.83, 302,888.82 and 122,691.21

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Solution

The fourth proportional to 219,487.83, 302,888.82 and 122,691.21 is: 169,311.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,487.83 : 302,888.82 = 122,691.21 : x
  2. Step 2: Convert to fraction form
    219,487.83/302,888.82 = 122,691.21/x
  3. Step 3: Cross multiply
    219,487.83x = 302,888.82 × 122,691.21
  4. Step 4: Simplify right side
    219,487.83x = 37,161,795,821.27
  5. Step 5: Solve for x
    x = 37,161,795,821.27/219,487.83
  6. Step 6: Final answer
    x = 169,311.42

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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.