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Finding the Fourth Proportional to 354,635.60, 531,953.40 and 275,320.40

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Solution

The fourth proportional to 354,635.60, 531,953.40 and 275,320.40 is: 412,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,635.60 : 531,953.40 = 275,320.40 : x
  2. Step 2: Convert to fraction form
    354,635.60/531,953.40 = 275,320.40/x
  3. Step 3: Cross multiply
    354,635.60x = 531,953.40 × 275,320.40
  4. Step 4: Simplify right side
    354,635.60x = 146,457,622,869.36
  5. Step 5: Solve for x
    x = 146,457,622,869.36/354,635.60
  6. Step 6: Final answer
    x = 412,980.60

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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.