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Finding the Fourth Proportional to 388,899.75, 536,682.02 and 210,051.75

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Solution

The fourth proportional to 388,899.75, 536,682.02 and 210,051.75 is: 289,871.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,899.75 : 536,682.02 = 210,051.75 : x
  2. Step 2: Convert to fraction form
    388,899.75/536,682.02 = 210,051.75/x
  3. Step 3: Cross multiply
    388,899.75x = 536,682.02 × 210,051.75
  4. Step 4: Simplify right side
    388,899.75x = 112,730,997,494.54
  5. Step 5: Solve for x
    x = 112,730,997,494.54/388,899.75
  6. Step 6: Final answer
    x = 289,871.61

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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.