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Finding the Fourth Proportional to 354,800.34, 531,918 and 204,870.60

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Solution

The fourth proportional to 354,800.34, 531,918 and 204,870.60 is: 307,142.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,800.34 : 531,918 = 204,870.60 : x
  2. Step 2: Convert to fraction form
    354,800.34/531,918 = 204,870.60/x
  3. Step 3: Cross multiply
    354,800.34x = 531,918 × 204,870.60
  4. Step 4: Simplify right side
    354,800.34x = 108,974,359,810.80
  5. Step 5: Solve for x
    x = 108,974,359,810.80/354,800.34
  6. Step 6: Final answer
    x = 307,142.77

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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.