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Finding the Fourth Proportional to 452,710.80, 678,288.60 and 215,542.80

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Solution

The fourth proportional to 452,710.80, 678,288.60 and 215,542.80 is: 322,943.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,710.80 : 678,288.60 = 215,542.80 : x
  2. Step 2: Convert to fraction form
    452,710.80/678,288.60 = 215,542.80/x
  3. Step 3: Cross multiply
    452,710.80x = 678,288.60 × 215,542.80
  4. Step 4: Simplify right side
    452,710.80x = 146,200,224,052.08
  5. Step 5: Solve for x
    x = 146,200,224,052.08/452,710.80
  6. Step 6: Final answer
    x = 322,943.97

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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.