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Finding the Fourth Proportional to 455,783.60, 683,714.28 and 118,868.96

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Solution

The fourth proportional to 455,783.60, 683,714.28 and 118,868.96 is: 178,313.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,783.60 : 683,714.28 = 118,868.96 : x
  2. Step 2: Convert to fraction form
    455,783.60/683,714.28 = 118,868.96/x
  3. Step 3: Cross multiply
    455,783.60x = 683,714.28 × 118,868.96
  4. Step 4: Simplify right side
    455,783.60x = 81,272,405,400.75
  5. Step 5: Solve for x
    x = 81,272,405,400.75/455,783.60
  6. Step 6: Final answer
    x = 178,313.58

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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.