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Finding the Fourth Proportional to 383,459.60, 575,448.60 and 214,979.60

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Solution

The fourth proportional to 383,459.60, 575,448.60 and 214,979.60 is: 322,614.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,459.60 : 575,448.60 = 214,979.60 : x
  2. Step 2: Convert to fraction form
    383,459.60/575,448.60 = 214,979.60/x
  3. Step 3: Cross multiply
    383,459.60x = 575,448.60 × 214,979.60
  4. Step 4: Simplify right side
    383,459.60x = 123,709,709,848.56
  5. Step 5: Solve for x
    x = 123,709,709,848.56/383,459.60
  6. Step 6: Final answer
    x = 322,614.72

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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.