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Finding the Fourth Proportional to 318,400.80, 439,396.74 and 182,432.01

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Solution

The fourth proportional to 318,400.80, 439,396.74 and 182,432.01 is: 251,758.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,400.80 : 439,396.74 = 182,432.01 : x
  2. Step 2: Convert to fraction form
    318,400.80/439,396.74 = 182,432.01/x
  3. Step 3: Cross multiply
    318,400.80x = 439,396.74 × 182,432.01
  4. Step 4: Simplify right side
    318,400.80x = 80,160,030,465.65
  5. Step 5: Solve for x
    x = 80,160,030,465.65/318,400.80
  6. Step 6: Final answer
    x = 251,758.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.