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Finding the Fourth Proportional to 264,903.40, 397,321.21 and 87,366.39

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Solution

The fourth proportional to 264,903.40, 397,321.21 and 87,366.39 is: 131,038.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,903.40 : 397,321.21 = 87,366.39 : x
  2. Step 2: Convert to fraction form
    264,903.40/397,321.21 = 87,366.39/x
  3. Step 3: Cross multiply
    264,903.40x = 397,321.21 × 87,366.39
  4. Step 4: Simplify right side
    264,903.40x = 34,712,519,788.13
  5. Step 5: Solve for x
    x = 34,712,519,788.13/264,903.40
  6. Step 6: Final answer
    x = 131,038.41

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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.