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Finding the Fourth Proportional to 326,370.75, 490,306.59 and 231,830.79

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Solution

The fourth proportional to 326,370.75, 490,306.59 and 231,830.79 is: 348,279.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,370.75 : 490,306.59 = 231,830.79 : x
  2. Step 2: Convert to fraction form
    326,370.75/490,306.59 = 231,830.79/x
  3. Step 3: Cross multiply
    326,370.75x = 490,306.59 × 231,830.79
  4. Step 4: Simplify right side
    326,370.75x = 113,668,164,101.91
  5. Step 5: Solve for x
    x = 113,668,164,101.91/326,370.75
  6. Step 6: Final answer
    x = 348,279.26

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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.