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Finding the Fourth Proportional to 352,398.48, 486,309.70 and 199,433.89

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Solution

The fourth proportional to 352,398.48, 486,309.70 and 199,433.89 is: 275,218.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,398.48 : 486,309.70 = 199,433.89 : x
  2. Step 2: Convert to fraction form
    352,398.48/486,309.70 = 199,433.89/x
  3. Step 3: Cross multiply
    352,398.48x = 486,309.70 × 199,433.89
  4. Step 4: Simplify right side
    352,398.48x = 96,986,632,784.18
  5. Step 5: Solve for x
    x = 96,986,632,784.18/352,398.48
  6. Step 6: Final answer
    x = 275,218.65

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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.