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Finding the Fourth Proportional to 342,887.20, 512,872.80 and 307,603.60

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Solution

The fourth proportional to 342,887.20, 512,872.80 and 307,603.60 is: 460,097.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,887.20 : 512,872.80 = 307,603.60 : x
  2. Step 2: Convert to fraction form
    342,887.20/512,872.80 = 307,603.60/x
  3. Step 3: Cross multiply
    342,887.20x = 512,872.80 × 307,603.60
  4. Step 4: Simplify right side
    342,887.20x = 157,761,519,622.08
  5. Step 5: Solve for x
    x = 157,761,519,622.08/342,887.20
  6. Step 6: Final answer
    x = 460,097.43

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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.