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Finding the Fourth Proportional to 352,299.54, 486,407.52 and 209,105.73

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Solution

The fourth proportional to 352,299.54, 486,407.52 and 209,105.73 is: 288,704.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,299.54 : 486,407.52 = 209,105.73 : x
  2. Step 2: Convert to fraction form
    352,299.54/486,407.52 = 209,105.73/x
  3. Step 3: Cross multiply
    352,299.54x = 486,407.52 × 209,105.73
  4. Step 4: Simplify right side
    352,299.54x = 101,710,599,547.09
  5. Step 5: Solve for x
    x = 101,710,599,547.09/352,299.54
  6. Step 6: Final answer
    x = 288,704.89

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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.