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Finding the Fourth Proportional to 461,333.12, 636,648 and 270,400.64

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Solution

The fourth proportional to 461,333.12, 636,648 and 270,400.64 is: 373,157.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,333.12 : 636,648 = 270,400.64 : x
  2. Step 2: Convert to fraction form
    461,333.12/636,648 = 270,400.64/x
  3. Step 3: Cross multiply
    461,333.12x = 636,648 × 270,400.64
  4. Step 4: Simplify right side
    461,333.12x = 172,150,026,654.72
  5. Step 5: Solve for x
    x = 172,150,026,654.72/461,333.12
  6. Step 6: Final answer
    x = 373,157.74

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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.