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Finding the Fourth Proportional to 279,988.60, 419,108.10 and 201,256.60

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Solution

The fourth proportional to 279,988.60, 419,108.10 and 201,256.60 is: 301,256.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,988.60 : 419,108.10 = 201,256.60 : x
  2. Step 2: Convert to fraction form
    279,988.60/419,108.10 = 201,256.60/x
  3. Step 3: Cross multiply
    279,988.60x = 419,108.10 × 201,256.60
  4. Step 4: Simplify right side
    279,988.60x = 84,348,271,238.46
  5. Step 5: Solve for x
    x = 84,348,271,238.46/279,988.60
  6. Step 6: Final answer
    x = 301,256.09

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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.