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Finding the Fourth Proportional to 531,757.18, 797,790.21 and 171,920.35

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Solution

The fourth proportional to 531,757.18, 797,790.21 and 171,920.35 is: 257,930.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,757.18 : 797,790.21 = 171,920.35 : x
  2. Step 2: Convert to fraction form
    531,757.18/797,790.21 = 171,920.35/x
  3. Step 3: Cross multiply
    531,757.18x = 797,790.21 × 171,920.35
  4. Step 4: Simplify right side
    531,757.18x = 137,156,372,129.77
  5. Step 5: Solve for x
    x = 137,156,372,129.77/531,757.18
  6. Step 6: Final answer
    x = 257,930.46

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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.