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Finding the Fourth Proportional to 393,074.40, 589,611.56 and 97,586.40

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Solution

The fourth proportional to 393,074.40, 589,611.56 and 97,586.40 is: 146,379.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,074.40 : 589,611.56 = 97,586.40 : x
  2. Step 2: Convert to fraction form
    393,074.40/589,611.56 = 97,586.40/x
  3. Step 3: Cross multiply
    393,074.40x = 589,611.56 × 97,586.40
  4. Step 4: Simplify right side
    393,074.40x = 57,538,069,538.78
  5. Step 5: Solve for x
    x = 57,538,069,538.78/393,074.40
  6. Step 6: Final answer
    x = 146,379.59

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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.