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Finding the Fourth Proportional to 284,734.60, 426,324.30 and 205,419.40

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Solution

The fourth proportional to 284,734.60, 426,324.30 and 205,419.40 is: 307,568.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,734.60 : 426,324.30 = 205,419.40 : x
  2. Step 2: Convert to fraction form
    284,734.60/426,324.30 = 205,419.40/x
  3. Step 3: Cross multiply
    284,734.60x = 426,324.30 × 205,419.40
  4. Step 4: Simplify right side
    284,734.60x = 87,575,281,911.42
  5. Step 5: Solve for x
    x = 87,575,281,911.42/284,734.60
  6. Step 6: Final answer
    x = 307,568.11

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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.