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Finding the Fourth Proportional to 354,866.86, 488,473.26 and 309,464.74

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Solution

The fourth proportional to 354,866.86, 488,473.26 and 309,464.74 is: 425,977.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,866.86 : 488,473.26 = 309,464.74 : x
  2. Step 2: Convert to fraction form
    354,866.86/488,473.26 = 309,464.74/x
  3. Step 3: Cross multiply
    354,866.86x = 488,473.26 × 309,464.74
  4. Step 4: Simplify right side
    354,866.86x = 151,165,250,402.85
  5. Step 5: Solve for x
    x = 151,165,250,402.85/354,866.86
  6. Step 6: Final answer
    x = 425,977.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.