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Finding the Fourth Proportional to 257,023.96, 385,555.42 and 79,548.92

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Solution

The fourth proportional to 257,023.96, 385,555.42 and 79,548.92 is: 119,329.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,023.96 : 385,555.42 = 79,548.92 : x
  2. Step 2: Convert to fraction form
    257,023.96/385,555.42 = 79,548.92/x
  3. Step 3: Cross multiply
    257,023.96x = 385,555.42 × 79,548.92
  4. Step 4: Simplify right side
    257,023.96x = 30,670,517,261.15
  5. Step 5: Solve for x
    x = 30,670,517,261.15/257,023.96
  6. Step 6: Final answer
    x = 119,329.41

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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.