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Finding the Fourth Proportional to 219,302.99, 302,621.24 and 123,819.11

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Solution

The fourth proportional to 219,302.99, 302,621.24 and 123,819.11 is: 170,860.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,302.99 : 302,621.24 = 123,819.11 : x
  2. Step 2: Convert to fraction form
    219,302.99/302,621.24 = 123,819.11/x
  3. Step 3: Cross multiply
    219,302.99x = 302,621.24 × 123,819.11
  4. Step 4: Simplify right side
    219,302.99x = 37,470,291,984.80
  5. Step 5: Solve for x
    x = 37,470,291,984.80/219,302.99
  6. Step 6: Final answer
    x = 170,860.83

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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.