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Finding the Fourth Proportional to 340,940.25, 512,531.52 and 316,278.03

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Solution

The fourth proportional to 340,940.25, 512,531.52 and 316,278.03 is: 475,457.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,940.25 : 512,531.52 = 316,278.03 : x
  2. Step 2: Convert to fraction form
    340,940.25/512,531.52 = 316,278.03/x
  3. Step 3: Cross multiply
    340,940.25x = 512,531.52 × 316,278.03
  4. Step 4: Simplify right side
    340,940.25x = 162,102,457,877.12
  5. Step 5: Solve for x
    x = 162,102,457,877.12/340,940.25
  6. Step 6: Final answer
    x = 475,457.09

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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.