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Finding the Fourth Proportional to 276,690.20, 415,035.30 and 201,457.40

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Solution

The fourth proportional to 276,690.20, 415,035.30 and 201,457.40 is: 302,186.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,690.20 : 415,035.30 = 201,457.40 : x
  2. Step 2: Convert to fraction form
    276,690.20/415,035.30 = 201,457.40/x
  3. Step 3: Cross multiply
    276,690.20x = 415,035.30 × 201,457.40
  4. Step 4: Simplify right side
    276,690.20x = 83,611,932,446.22
  5. Step 5: Solve for x
    x = 83,611,932,446.22/276,690.20
  6. Step 6: Final answer
    x = 302,186.10

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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.