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Finding the Fourth Proportional to 324,823.20, 487,234.80 and 235,658.40

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Solution

The fourth proportional to 324,823.20, 487,234.80 and 235,658.40 is: 353,487.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,823.20 : 487,234.80 = 235,658.40 : x
  2. Step 2: Convert to fraction form
    324,823.20/487,234.80 = 235,658.40/x
  3. Step 3: Cross multiply
    324,823.20x = 487,234.80 × 235,658.40
  4. Step 4: Simplify right side
    324,823.20x = 114,820,973,392.32
  5. Step 5: Solve for x
    x = 114,820,973,392.32/324,823.20
  6. Step 6: Final answer
    x = 353,487.60

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Similar ratio
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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.