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Finding the Fourth Proportional to 612,520.96, 918,708.54 and 163,275.52

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Solution

The fourth proportional to 612,520.96, 918,708.54 and 163,275.52 is: 244,893.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,520.96 : 918,708.54 = 163,275.52 : x
  2. Step 2: Convert to fraction form
    612,520.96/918,708.54 = 163,275.52/x
  3. Step 3: Cross multiply
    612,520.96x = 918,708.54 × 163,275.52
  4. Step 4: Simplify right side
    612,520.96x = 150,002,614,596.94
  5. Step 5: Solve for x
    x = 150,002,614,596.94/612,520.96
  6. Step 6: Final answer
    x = 244,893.85

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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.