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Finding the Fourth Proportional to 276,567.70, 381,670.65 and 155,713.43

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Solution

The fourth proportional to 276,567.70, 381,670.65 and 155,713.43 is: 214,888.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,567.70 : 381,670.65 = 155,713.43 : x
  2. Step 2: Convert to fraction form
    276,567.70/381,670.65 = 155,713.43/x
  3. Step 3: Cross multiply
    276,567.70x = 381,670.65 × 155,713.43
  4. Step 4: Simplify right side
    276,567.70x = 59,431,246,041.83
  5. Step 5: Solve for x
    x = 59,431,246,041.83/276,567.70
  6. Step 6: Final answer
    x = 214,888.60

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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.