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Finding the Fourth Proportional to 279,099.60, 418,649.40 and 276,475.20

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Solution

The fourth proportional to 279,099.60, 418,649.40 and 276,475.20 is: 414,712.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,099.60 : 418,649.40 = 276,475.20 : x
  2. Step 2: Convert to fraction form
    279,099.60/418,649.40 = 276,475.20/x
  3. Step 3: Cross multiply
    279,099.60x = 418,649.40 × 276,475.20
  4. Step 4: Simplify right side
    279,099.60x = 115,746,176,594.88
  5. Step 5: Solve for x
    x = 115,746,176,594.88/279,099.60
  6. Step 6: Final answer
    x = 414,712.80

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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.