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Finding the Fourth Proportional to 323,817.20, 485,725.80 and 235,689.20

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Solution

The fourth proportional to 323,817.20, 485,725.80 and 235,689.20 is: 353,533.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,817.20 : 485,725.80 = 235,689.20 : x
  2. Step 2: Convert to fraction form
    323,817.20/485,725.80 = 235,689.20/x
  3. Step 3: Cross multiply
    323,817.20x = 485,725.80 × 235,689.20
  4. Step 4: Simplify right side
    323,817.20x = 114,480,325,221.36
  5. Step 5: Solve for x
    x = 114,480,325,221.36/323,817.20
  6. Step 6: Final answer
    x = 353,533.80

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1.5x scale

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.