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Finding the Fourth Proportional to 306,089.83, 459,134.11 and 81,450.25

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Solution

The fourth proportional to 306,089.83, 459,134.11 and 81,450.25 is: 122,175.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,089.83 : 459,134.11 = 81,450.25 : x
  2. Step 2: Convert to fraction form
    306,089.83/459,134.11 = 81,450.25/x
  3. Step 3: Cross multiply
    306,089.83x = 459,134.11 × 81,450.25
  4. Step 4: Simplify right side
    306,089.83x = 37,396,588,043.03
  5. Step 5: Solve for x
    x = 37,396,588,043.03/306,089.83
  6. Step 6: Final answer
    x = 122,175.21

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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.