Home / 279,931.40-419,897.10-276,000.20

Finding the Fourth Proportional to 279,931.40, 419,897.10 and 276,000.20

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Solution

The fourth proportional to 279,931.40, 419,897.10 and 276,000.20 is: 414,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,931.40 : 419,897.10 = 276,000.20 : x
  2. Step 2: Convert to fraction form
    279,931.40/419,897.10 = 276,000.20/x
  3. Step 3: Cross multiply
    279,931.40x = 419,897.10 × 276,000.20
  4. Step 4: Simplify right side
    279,931.40x = 115,891,683,579.42
  5. Step 5: Solve for x
    x = 115,891,683,579.42/279,931.40
  6. Step 6: Final answer
    x = 414,000.30

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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.