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Finding the Fourth Proportional to 303,806.04, 455,312.68 and 219,849

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Solution

The fourth proportional to 303,806.04, 455,312.68 and 219,849 is: 329,486.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,806.04 : 455,312.68 = 219,849 : x
  2. Step 2: Convert to fraction form
    303,806.04/455,312.68 = 219,849/x
  3. Step 3: Cross multiply
    303,806.04x = 455,312.68 × 219,849
  4. Step 4: Simplify right side
    303,806.04x = 100,100,037,385.32
  5. Step 5: Solve for x
    x = 100,100,037,385.32/303,806.04
  6. Step 6: Final answer
    x = 329,486.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.