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Finding the Fourth Proportional to 351,817.84, 485,510.32 and 190,672.85

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Solution

The fourth proportional to 351,817.84, 485,510.32 and 190,672.85 is: 263,129.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,817.84 : 485,510.32 = 190,672.85 : x
  2. Step 2: Convert to fraction form
    351,817.84/485,510.32 = 190,672.85/x
  3. Step 3: Cross multiply
    351,817.84x = 485,510.32 × 190,672.85
  4. Step 4: Simplify right side
    351,817.84x = 92,573,633,991.26
  5. Step 5: Solve for x
    x = 92,573,633,991.26/351,817.84
  6. Step 6: Final answer
    x = 263,129.45

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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.