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Finding the Fourth Proportional to 351,530.79, 485,112.34 and 190,385.84

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Solution

The fourth proportional to 351,530.79, 485,112.34 and 190,385.84 is: 262,732.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,530.79 : 485,112.34 = 190,385.84 : x
  2. Step 2: Convert to fraction form
    351,530.79/485,112.34 = 190,385.84/x
  3. Step 3: Cross multiply
    351,530.79x = 485,112.34 × 190,385.84
  4. Step 4: Simplify right side
    351,530.79x = 92,358,521,796.03
  5. Step 5: Solve for x
    x = 92,358,521,796.03/351,530.79
  6. Step 6: Final answer
    x = 262,732.38

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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.