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Finding the Fourth Proportional to 328,094.60, 492,081.15 and 91,388.30

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Solution

The fourth proportional to 328,094.60, 492,081.15 and 91,388.30 is: 137,065.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,094.60 : 492,081.15 = 91,388.30 : x
  2. Step 2: Convert to fraction form
    328,094.60/492,081.15 = 91,388.30/x
  3. Step 3: Cross multiply
    328,094.60x = 492,081.15 × 91,388.30
  4. Step 4: Simplify right side
    328,094.60x = 44,970,459,760.55
  5. Step 5: Solve for x
    x = 44,970,459,760.55/328,094.60
  6. Step 6: Final answer
    x = 137,065.53

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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.