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Finding the Fourth Proportional to 276,670.60, 415,005.90 and 265,006.60

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Solution

The fourth proportional to 276,670.60, 415,005.90 and 265,006.60 is: 397,509.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,670.60 : 415,005.90 = 265,006.60 : x
  2. Step 2: Convert to fraction form
    276,670.60/415,005.90 = 265,006.60/x
  3. Step 3: Cross multiply
    276,670.60x = 415,005.90 × 265,006.60
  4. Step 4: Simplify right side
    276,670.60x = 109,979,302,538.94
  5. Step 5: Solve for x
    x = 109,979,302,538.94/276,670.60
  6. Step 6: Final answer
    x = 397,509.90

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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.