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Finding the Fourth Proportional to 348,000.10, 522,000.15 and 259,426.60

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Solution

The fourth proportional to 348,000.10, 522,000.15 and 259,426.60 is: 389,139.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,000.10 : 522,000.15 = 259,426.60 : x
  2. Step 2: Convert to fraction form
    348,000.10/522,000.15 = 259,426.60/x
  3. Step 3: Cross multiply
    348,000.10x = 522,000.15 × 259,426.60
  4. Step 4: Simplify right side
    348,000.10x = 135,420,724,113.99
  5. Step 5: Solve for x
    x = 135,420,724,113.99/348,000.10
  6. Step 6: Final answer
    x = 389,139.90

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1.5x scale

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.