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Finding the Fourth Proportional to 383,813.60, 575,720.40 and 134,495.60

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Solution

The fourth proportional to 383,813.60, 575,720.40 and 134,495.60 is: 201,743.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,813.60 : 575,720.40 = 134,495.60 : x
  2. Step 2: Convert to fraction form
    383,813.60/575,720.40 = 134,495.60/x
  3. Step 3: Cross multiply
    383,813.60x = 575,720.40 × 134,495.60
  4. Step 4: Simplify right side
    383,813.60x = 77,431,860,630.24
  5. Step 5: Solve for x
    x = 77,431,860,630.24/383,813.60
  6. Step 6: Final answer
    x = 201,743.40

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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.