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Finding the Fourth Proportional to 279,080.40, 418,620.60 and 200,931.60

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Solution

The fourth proportional to 279,080.40, 418,620.60 and 200,931.60 is: 301,397.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,080.40 : 418,620.60 = 200,931.60 : x
  2. Step 2: Convert to fraction form
    279,080.40/418,620.60 = 200,931.60/x
  3. Step 3: Cross multiply
    279,080.40x = 418,620.60 × 200,931.60
  4. Step 4: Simplify right side
    279,080.40x = 84,114,106,950.96
  5. Step 5: Solve for x
    x = 84,114,106,950.96/279,080.40
  6. Step 6: Final answer
    x = 301,397.40

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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.