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Finding the Fourth Proportional to 612,163.16, 918,246.90 and 185,702.72

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Solution

The fourth proportional to 612,163.16, 918,246.90 and 185,702.72 is: 278,554.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,163.16 : 918,246.90 = 185,702.72 : x
  2. Step 2: Convert to fraction form
    612,163.16/918,246.90 = 185,702.72/x
  3. Step 3: Cross multiply
    612,163.16x = 918,246.90 × 185,702.72
  4. Step 4: Simplify right side
    612,163.16x = 170,520,942,370.33
  5. Step 5: Solve for x
    x = 170,520,942,370.33/612,163.16
  6. Step 6: Final answer
    x = 278,554.73

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1.5x scale

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.