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Finding the Fourth Proportional to 328,188.26, 492,282.34 and 78,870.26

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Solution

The fourth proportional to 328,188.26, 492,282.34 and 78,870.26 is: 118,305.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,188.26 : 492,282.34 = 78,870.26 : x
  2. Step 2: Convert to fraction form
    328,188.26/492,282.34 = 78,870.26/x
  3. Step 3: Cross multiply
    328,188.26x = 492,282.34 × 78,870.26
  4. Step 4: Simplify right side
    328,188.26x = 38,826,436,149.21
  5. Step 5: Solve for x
    x = 38,826,436,149.21/328,188.26
  6. Step 6: Final answer
    x = 118,305.38

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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.