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Finding the Fourth Proportional to 354,059.48, 531,187.64 and 154,397.32

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Solution

The fourth proportional to 354,059.48, 531,187.64 and 154,397.32 is: 231,638.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,059.48 : 531,187.64 = 154,397.32 : x
  2. Step 2: Convert to fraction form
    354,059.48/531,187.64 = 154,397.32/x
  3. Step 3: Cross multiply
    354,059.48x = 531,187.64 × 154,397.32
  4. Step 4: Simplify right side
    354,059.48x = 82,013,948,033.12
  5. Step 5: Solve for x
    x = 82,013,948,033.12/354,059.48
  6. Step 6: Final answer
    x = 231,638.90

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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.