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Finding the Fourth Proportional to 547,301.40, 820,514.70 and 231,498.60

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Solution

The fourth proportional to 547,301.40, 820,514.70 and 231,498.60 is: 347,062.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,301.40 : 820,514.70 = 231,498.60 : x
  2. Step 2: Convert to fraction form
    547,301.40/820,514.70 = 231,498.60/x
  3. Step 3: Cross multiply
    547,301.40x = 820,514.70 × 231,498.60
  4. Step 4: Simplify right side
    547,301.40x = 189,948,004,329.42
  5. Step 5: Solve for x
    x = 189,948,004,329.42/547,301.40
  6. Step 6: Final answer
    x = 347,062.89

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1.5x scale

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.