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Finding the Fourth Proportional to 383,586.60, 575,639.10 and 215,106.60

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Solution

The fourth proportional to 383,586.60, 575,639.10 and 215,106.60 is: 322,805.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,586.60 : 575,639.10 = 215,106.60 : x
  2. Step 2: Convert to fraction form
    383,586.60/575,639.10 = 215,106.60/x
  3. Step 3: Cross multiply
    383,586.60x = 575,639.10 × 215,106.60
  4. Step 4: Simplify right side
    383,586.60x = 123,823,769,628.06
  5. Step 5: Solve for x
    x = 123,823,769,628.06/383,586.60
  6. Step 6: Final answer
    x = 322,805.25

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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.