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Finding the Fourth Proportional to 388,793.01, 536,422.58 and 253,026.79

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Solution

The fourth proportional to 388,793.01, 536,422.58 and 253,026.79 is: 349,104.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,793.01 : 536,422.58 = 253,026.79 : x
  2. Step 2: Convert to fraction form
    388,793.01/536,422.58 = 253,026.79/x
  3. Step 3: Cross multiply
    388,793.01x = 536,422.58 × 253,026.79
  4. Step 4: Simplify right side
    388,793.01x = 135,729,281,131.94
  5. Step 5: Solve for x
    x = 135,729,281,131.94/388,793.01
  6. Step 6: Final answer
    x = 349,104.22

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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.