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Finding the Fourth Proportional to 461,392.45, 636,765.54 and 280,062.81

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Solution

The fourth proportional to 461,392.45, 636,765.54 and 280,062.81 is: 386,513.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,392.45 : 636,765.54 = 280,062.81 : x
  2. Step 2: Convert to fraction form
    461,392.45/636,765.54 = 280,062.81/x
  3. Step 3: Cross multiply
    461,392.45x = 636,765.54 × 280,062.81
  4. Step 4: Simplify right side
    461,392.45x = 178,334,345,393.33
  5. Step 5: Solve for x
    x = 178,334,345,393.33/461,392.45
  6. Step 6: Final answer
    x = 386,513.36

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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.