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Finding the Fourth Proportional to 388,881.75, 536,657.02 and 210,033.75

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Solution

The fourth proportional to 388,881.75, 536,657.02 and 210,033.75 is: 289,846.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,881.75 : 536,657.02 = 210,033.75 : x
  2. Step 2: Convert to fraction form
    388,881.75/536,657.02 = 210,033.75/x
  3. Step 3: Cross multiply
    388,881.75x = 536,657.02 × 210,033.75
  4. Step 4: Simplify right side
    388,881.75x = 112,716,086,374.43
  5. Step 5: Solve for x
    x = 112,716,086,374.43/388,881.75
  6. Step 6: Final answer
    x = 289,846.69

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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.