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Finding the Fourth Proportional to 489,265.92, 675,209.71 and 305,613.24

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Solution

The fourth proportional to 489,265.92, 675,209.71 and 305,613.24 is: 421,760.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,265.92 : 675,209.71 = 305,613.24 : x
  2. Step 2: Convert to fraction form
    489,265.92/675,209.71 = 305,613.24/x
  3. Step 3: Cross multiply
    489,265.92x = 675,209.71 × 305,613.24
  4. Step 4: Simplify right side
    489,265.92x = 206,353,027,421.31
  5. Step 5: Solve for x
    x = 206,353,027,421.31/489,265.92
  6. Step 6: Final answer
    x = 421,760.48

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1.5x scale

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.