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Finding the Fourth Proportional to 275,727.55, 386,543.45 and 275,727.55

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Solution

The fourth proportional to 275,727.55, 386,543.45 and 275,727.55 is: 386,543.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,727.55 : 386,543.45 = 275,727.55 : x
  2. Step 2: Convert to fraction form
    275,727.55/386,543.45 = 275,727.55/x
  3. Step 3: Cross multiply
    275,727.55x = 386,543.45 × 275,727.55
  4. Step 4: Simplify right side
    275,727.55x = 106,580,678,437.05
  5. Step 5: Solve for x
    x = 106,580,678,437.05/275,727.55
  6. Step 6: Final answer
    x = 386,543.45

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.