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Finding the Fourth Proportional to 355,212.40, 532,794.30 and 115,322.80

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Solution

The fourth proportional to 355,212.40, 532,794.30 and 115,322.80 is: 172,976.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,212.40 : 532,794.30 = 115,322.80 : x
  2. Step 2: Convert to fraction form
    355,212.40/532,794.30 = 115,322.80/x
  3. Step 3: Cross multiply
    355,212.40x = 532,794.30 × 115,322.80
  4. Step 4: Simplify right side
    355,212.40x = 61,443,330,500.04
  5. Step 5: Solve for x
    x = 61,443,330,500.04/355,212.40
  6. Step 6: Final answer
    x = 172,976.31

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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.