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Finding the Fourth Proportional to 341,628.40, 512,442.60 and 316,745.20

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Solution

The fourth proportional to 341,628.40, 512,442.60 and 316,745.20 is: 475,117.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,628.40 : 512,442.60 = 316,745.20 : x
  2. Step 2: Convert to fraction form
    341,628.40/512,442.60 = 316,745.20/x
  3. Step 3: Cross multiply
    341,628.40x = 512,442.60 × 316,745.20
  4. Step 4: Simplify right side
    341,628.40x = 162,313,733,825.52
  5. Step 5: Solve for x
    x = 162,313,733,825.52/341,628.40
  6. Step 6: Final answer
    x = 475,117.80

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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.