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Finding the Fourth Proportional to 348,542.60, 522,813.90 and 259,969.10

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Solution

The fourth proportional to 348,542.60, 522,813.90 and 259,969.10 is: 389,953.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,542.60 : 522,813.90 = 259,969.10 : x
  2. Step 2: Convert to fraction form
    348,542.60/522,813.90 = 259,969.10/x
  3. Step 3: Cross multiply
    348,542.60x = 522,813.90 × 259,969.10
  4. Step 4: Simplify right side
    348,542.60x = 135,915,459,050.49
  5. Step 5: Solve for x
    x = 135,915,459,050.49/348,542.60
  6. Step 6: Final answer
    x = 389,953.65

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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.