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Finding the Fourth Proportional to 351,954.76, 485,480.10 and 216,010.84

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Solution

The fourth proportional to 351,954.76, 485,480.10 and 216,010.84 is: 297,961.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,954.76 : 485,480.10 = 216,010.84 : x
  2. Step 2: Convert to fraction form
    351,954.76/485,480.10 = 216,010.84/x
  3. Step 3: Cross multiply
    351,954.76x = 485,480.10 × 216,010.84
  4. Step 4: Simplify right side
    351,954.76x = 104,868,964,204.28
  5. Step 5: Solve for x
    x = 104,868,964,204.28/351,954.76
  6. Step 6: Final answer
    x = 297,961.49

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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.