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Finding the Fourth Proportional to 341,747.40, 513,042.30 and 215,387.40

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Solution

The fourth proportional to 341,747.40, 513,042.30 and 215,387.40 is: 323,346.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,747.40 : 513,042.30 = 215,387.40 : x
  2. Step 2: Convert to fraction form
    341,747.40/513,042.30 = 215,387.40/x
  3. Step 3: Cross multiply
    341,747.40x = 513,042.30 × 215,387.40
  4. Step 4: Simplify right side
    341,747.40x = 110,502,847,087.02
  5. Step 5: Solve for x
    x = 110,502,847,087.02/341,747.40
  6. Step 6: Final answer
    x = 323,346.56

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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.