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Finding the Fourth Proportional to 383,510.56, 575,226.96 and 102,991.36

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Solution

The fourth proportional to 383,510.56, 575,226.96 and 102,991.36 is: 154,476.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,510.56 : 575,226.96 = 102,991.36 : x
  2. Step 2: Convert to fraction form
    383,510.56/575,226.96 = 102,991.36/x
  3. Step 3: Cross multiply
    383,510.56x = 575,226.96 × 102,991.36
  4. Step 4: Simplify right side
    383,510.56x = 59,243,406,919.07
  5. Step 5: Solve for x
    x = 59,243,406,919.07/383,510.56
  6. Step 6: Final answer
    x = 154,476.60

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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.