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Finding the Fourth Proportional to 265,564.80, 399,124.80 and 231,350.40

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Solution

The fourth proportional to 265,564.80, 399,124.80 and 231,350.40 is: 347,703.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,564.80 : 399,124.80 = 231,350.40 : x
  2. Step 2: Convert to fraction form
    265,564.80/399,124.80 = 231,350.40/x
  3. Step 3: Cross multiply
    265,564.80x = 399,124.80 × 231,350.40
  4. Step 4: Simplify right side
    265,564.80x = 92,337,682,129.92
  5. Step 5: Solve for x
    x = 92,337,682,129.92/265,564.80
  6. Step 6: Final answer
    x = 347,703.02

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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.