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Finding the Fourth Proportional to 455,809.28, 683,714.43 and 118,849.64

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Solution

The fourth proportional to 455,809.28, 683,714.43 and 118,849.64 is: 178,274.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,809.28 : 683,714.43 = 118,849.64 : x
  2. Step 2: Convert to fraction form
    455,809.28/683,714.43 = 118,849.64/x
  3. Step 3: Cross multiply
    455,809.28x = 683,714.43 × 118,849.64
  4. Step 4: Simplify right side
    455,809.28x = 81,259,213,868.31
  5. Step 5: Solve for x
    x = 81,259,213,868.31/455,809.28
  6. Step 6: Final answer
    x = 178,274.59

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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.