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Finding the Fourth Proportional to 556,132.80, 834,199.20 and 319,936.80

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Solution

The fourth proportional to 556,132.80, 834,199.20 and 319,936.80 is: 479,905.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,132.80 : 834,199.20 = 319,936.80 : x
  2. Step 2: Convert to fraction form
    556,132.80/834,199.20 = 319,936.80/x
  3. Step 3: Cross multiply
    556,132.80x = 834,199.20 × 319,936.80
  4. Step 4: Simplify right side
    556,132.80x = 266,891,022,610.56
  5. Step 5: Solve for x
    x = 266,891,022,610.56/556,132.80
  6. Step 6: Final answer
    x = 479,905.20

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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.