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Finding the Fourth Proportional to 354,663.60, 531,995.40 and 275,348.40

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Solution

The fourth proportional to 354,663.60, 531,995.40 and 275,348.40 is: 413,022.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,663.60 : 531,995.40 = 275,348.40 : x
  2. Step 2: Convert to fraction form
    354,663.60/531,995.40 = 275,348.40/x
  3. Step 3: Cross multiply
    354,663.60x = 531,995.40 × 275,348.40
  4. Step 4: Simplify right side
    354,663.60x = 146,484,082,197.36
  5. Step 5: Solve for x
    x = 146,484,082,197.36/354,663.60
  6. Step 6: Final answer
    x = 413,022.60

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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.