Home / 492,021.20-738,031.80-243,189.20

Finding the Fourth Proportional to 492,021.20, 738,031.80 and 243,189.20

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Solution

The fourth proportional to 492,021.20, 738,031.80 and 243,189.20 is: 364,783.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,021.20 : 738,031.80 = 243,189.20 : x
  2. Step 2: Convert to fraction form
    492,021.20/738,031.80 = 243,189.20/x
  3. Step 3: Cross multiply
    492,021.20x = 738,031.80 × 243,189.20
  4. Step 4: Simplify right side
    492,021.20x = 179,481,363,016.56
  5. Step 5: Solve for x
    x = 179,481,363,016.56/492,021.20
  6. Step 6: Final answer
    x = 364,783.80

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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.