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Finding the Fourth Proportional to 341,941.20, 512,911.80 and 279,733.20

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Solution

The fourth proportional to 341,941.20, 512,911.80 and 279,733.20 is: 419,599.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,941.20 : 512,911.80 = 279,733.20 : x
  2. Step 2: Convert to fraction form
    341,941.20/512,911.80 = 279,733.20/x
  3. Step 3: Cross multiply
    341,941.20x = 512,911.80 × 279,733.20
  4. Step 4: Simplify right side
    341,941.20x = 143,478,459,131.76
  5. Step 5: Solve for x
    x = 143,478,459,131.76/341,941.20
  6. Step 6: Final answer
    x = 419,599.80

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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.