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Finding the Fourth Proportional to 328,298.76, 492,360.48 and 91,599.84

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Solution

The fourth proportional to 328,298.76, 492,360.48 and 91,599.84 is: 137,375.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,298.76 : 492,360.48 = 91,599.84 : x
  2. Step 2: Convert to fraction form
    328,298.76/492,360.48 = 91,599.84/x
  3. Step 3: Cross multiply
    328,298.76x = 492,360.48 × 91,599.84
  4. Step 4: Simplify right side
    328,298.76x = 45,100,141,190.32
  5. Step 5: Solve for x
    x = 45,100,141,190.32/328,298.76
  6. Step 6: Final answer
    x = 137,375.30

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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.