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Finding the Fourth Proportional to 616,209.12, 850,372.56 and 344,286.72

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Solution

The fourth proportional to 616,209.12, 850,372.56 and 344,286.72 is: 475,117.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,209.12 : 850,372.56 = 344,286.72 : x
  2. Step 2: Convert to fraction form
    616,209.12/850,372.56 = 344,286.72/x
  3. Step 3: Cross multiply
    616,209.12x = 850,372.56 × 344,286.72
  4. Step 4: Simplify right side
    616,209.12x = 292,771,979,460.40
  5. Step 5: Solve for x
    x = 292,771,979,460.40/616,209.12
  6. Step 6: Final answer
    x = 475,117.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.