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Finding the Fourth Proportional to 483,611.16, 725,415.83 and 128,625.56

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Solution

The fourth proportional to 483,611.16, 725,415.83 and 128,625.56 is: 192,938.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,611.16 : 725,415.83 = 128,625.56 : x
  2. Step 2: Convert to fraction form
    483,611.16/725,415.83 = 128,625.56/x
  3. Step 3: Cross multiply
    483,611.16x = 725,415.83 × 128,625.56
  4. Step 4: Simplify right side
    483,611.16x = 93,307,017,366.61
  5. Step 5: Solve for x
    x = 93,307,017,366.61/483,611.16
  6. Step 6: Final answer
    x = 192,938.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.