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Finding the Fourth Proportional to 324,285.20, 486,427.80 and 235,120.40

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Solution

The fourth proportional to 324,285.20, 486,427.80 and 235,120.40 is: 352,680.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,285.20 : 486,427.80 = 235,120.40 : x
  2. Step 2: Convert to fraction form
    324,285.20/486,427.80 = 235,120.40/x
  3. Step 3: Cross multiply
    324,285.20x = 486,427.80 × 235,120.40
  4. Step 4: Simplify right side
    324,285.20x = 114,369,098,907.12
  5. Step 5: Solve for x
    x = 114,369,098,907.12/324,285.20
  6. Step 6: Final answer
    x = 352,680.60

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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.