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Finding the Fourth Proportional to 644,345.32, 966,147.54 and 265,527.52

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Solution

The fourth proportional to 644,345.32, 966,147.54 and 265,527.52 is: 398,138.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,345.32 : 966,147.54 = 265,527.52 : x
  2. Step 2: Convert to fraction form
    644,345.32/966,147.54 = 265,527.52/x
  3. Step 3: Cross multiply
    644,345.32x = 966,147.54 × 265,527.52
  4. Step 4: Simplify right side
    644,345.32x = 256,538,760,250.30
  5. Step 5: Solve for x
    x = 256,538,760,250.30/644,345.32
  6. Step 6: Final answer
    x = 398,138.63

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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.