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Finding the Fourth Proportional to 467,468.28, 645,417.42 and 276,542.84

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Solution

The fourth proportional to 467,468.28, 645,417.42 and 276,542.84 is: 381,813.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,468.28 : 645,417.42 = 276,542.84 : x
  2. Step 2: Convert to fraction form
    467,468.28/645,417.42 = 276,542.84/x
  3. Step 3: Cross multiply
    467,468.28x = 645,417.42 × 276,542.84
  4. Step 4: Simplify right side
    467,468.28x = 178,485,566,312.27
  5. Step 5: Solve for x
    x = 178,485,566,312.27/467,468.28
  6. Step 6: Final answer
    x = 381,813.21

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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.