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Finding the Fourth Proportional to 341,628.60, 512,442.90 and 215,657.40

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Solution

The fourth proportional to 341,628.60, 512,442.90 and 215,657.40 is: 323,486.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,628.60 : 512,442.90 = 215,657.40 : x
  2. Step 2: Convert to fraction form
    341,628.60/512,442.90 = 215,657.40/x
  3. Step 3: Cross multiply
    341,628.60x = 512,442.90 × 215,657.40
  4. Step 4: Simplify right side
    341,628.60x = 110,512,103,462.46
  5. Step 5: Solve for x
    x = 110,512,103,462.46/341,628.60
  6. Step 6: Final answer
    x = 323,486.10

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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.