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Finding the Fourth Proportional to 216,481.48, 298,744.88 and 120,988.18

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Solution

The fourth proportional to 216,481.48, 298,744.88 and 120,988.18 is: 166,963.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,481.48 : 298,744.88 = 120,988.18 : x
  2. Step 2: Convert to fraction form
    216,481.48/298,744.88 = 120,988.18/x
  3. Step 3: Cross multiply
    216,481.48x = 298,744.88 × 120,988.18
  4. Step 4: Simplify right side
    216,481.48x = 36,144,599,315.52
  5. Step 5: Solve for x
    x = 36,144,599,315.52/216,481.48
  6. Step 6: Final answer
    x = 166,963.93

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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.