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Finding the Fourth Proportional to 328,125.60, 492,706.80 and 239,997.60

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Solution

The fourth proportional to 328,125.60, 492,706.80 and 239,997.60 is: 360,375.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,125.60 : 492,706.80 = 239,997.60 : x
  2. Step 2: Convert to fraction form
    328,125.60/492,706.80 = 239,997.60/x
  3. Step 3: Cross multiply
    328,125.60x = 492,706.80 × 239,997.60
  4. Step 4: Simplify right side
    328,125.60x = 118,248,449,503.68
  5. Step 5: Solve for x
    x = 118,248,449,503.68/328,125.60
  6. Step 6: Final answer
    x = 360,375.57

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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.