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Finding the Fourth Proportional to 455,833.20, 683,749.80 and 219,637.20

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Solution

The fourth proportional to 455,833.20, 683,749.80 and 219,637.20 is: 329,455.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,833.20 : 683,749.80 = 219,637.20 : x
  2. Step 2: Convert to fraction form
    455,833.20/683,749.80 = 219,637.20/x
  3. Step 3: Cross multiply
    455,833.20x = 683,749.80 × 219,637.20
  4. Step 4: Simplify right side
    455,833.20x = 150,176,891,572.56
  5. Step 5: Solve for x
    x = 150,176,891,572.56/455,833.20
  6. Step 6: Final answer
    x = 329,455.80

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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.