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Finding the Fourth Proportional to 388,871.88, 536,643.39 and 210,023.88

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Solution

The fourth proportional to 388,871.88, 536,643.39 and 210,023.88 is: 289,833.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,871.88 : 536,643.39 = 210,023.88 : x
  2. Step 2: Convert to fraction form
    388,871.88/536,643.39 = 210,023.88/x
  3. Step 3: Cross multiply
    388,871.88x = 536,643.39 × 210,023.88
  4. Step 4: Simplify right side
    388,871.88x = 112,707,924,260.94
  5. Step 5: Solve for x
    x = 112,707,924,260.94/388,871.88
  6. Step 6: Final answer
    x = 289,833.06

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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.