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Finding the Fourth Proportional to 386,757.88, 581,026.26 and 274,710.64

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Solution

The fourth proportional to 386,757.88, 581,026.26 and 274,710.64 is: 412,697.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,757.88 : 581,026.26 = 274,710.64 : x
  2. Step 2: Convert to fraction form
    386,757.88/581,026.26 = 274,710.64/x
  3. Step 3: Cross multiply
    386,757.88x = 581,026.26 × 274,710.64
  4. Step 4: Simplify right side
    386,757.88x = 159,614,095,741.41
  5. Step 5: Solve for x
    x = 159,614,095,741.41/386,757.88
  6. Step 6: Final answer
    x = 412,697.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.