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Finding the Fourth Proportional to 437,089.68, 655,299.72 and 137,396.88

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Solution

The fourth proportional to 437,089.68, 655,299.72 and 137,396.88 is: 205,990.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,089.68 : 655,299.72 = 137,396.88 : x
  2. Step 2: Convert to fraction form
    437,089.68/655,299.72 = 137,396.88/x
  3. Step 3: Cross multiply
    437,089.68x = 655,299.72 × 137,396.88
  4. Step 4: Simplify right side
    437,089.68x = 90,036,136,992.87
  5. Step 5: Solve for x
    x = 90,036,136,992.87/437,089.68
  6. Step 6: Final answer
    x = 205,990.08

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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.