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Finding the Fourth Proportional to 276,861, 415,007.80 and 210,159.93

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Solution

The fourth proportional to 276,861, 415,007.80 and 210,159.93 is: 315,024.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,861 : 415,007.80 = 210,159.93 : x
  2. Step 2: Convert to fraction form
    276,861/415,007.80 = 210,159.93/x
  3. Step 3: Cross multiply
    276,861x = 415,007.80 × 210,159.93
  4. Step 4: Simplify right side
    276,861x = 87,218,009,672.05
  5. Step 5: Solve for x
    x = 87,218,009,672.05/276,861
  6. Step 6: Final answer
    x = 315,024.54

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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.