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Finding the Fourth Proportional to 417,963.76, 576,966.57 and 282,181.64

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Solution

The fourth proportional to 417,963.76, 576,966.57 and 282,181.64 is: 389,529.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,963.76 : 576,966.57 = 282,181.64 : x
  2. Step 2: Convert to fraction form
    417,963.76/576,966.57 = 282,181.64/x
  3. Step 3: Cross multiply
    417,963.76x = 576,966.57 × 282,181.64
  4. Step 4: Simplify right side
    417,963.76x = 162,809,368,652.03
  5. Step 5: Solve for x
    x = 162,809,368,652.03/417,963.76
  6. Step 6: Final answer
    x = 389,529.87

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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.