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Finding the Fourth Proportional to 297,879.20, 446,829.60 and 87,538.40

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Solution

The fourth proportional to 297,879.20, 446,829.60 and 87,538.40 is: 131,310.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,879.20 : 446,829.60 = 87,538.40 : x
  2. Step 2: Convert to fraction form
    297,879.20/446,829.60 = 87,538.40/x
  3. Step 3: Cross multiply
    297,879.20x = 446,829.60 × 87,538.40
  4. Step 4: Simplify right side
    297,879.20x = 39,114,748,256.64
  5. Step 5: Solve for x
    x = 39,114,748,256.64/297,879.20
  6. Step 6: Final answer
    x = 131,310.77

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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.