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Finding the Fourth Proportional to 343,231.20, 514,846.80 and 90,511.20

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Solution

The fourth proportional to 343,231.20, 514,846.80 and 90,511.20 is: 135,766.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,231.20 : 514,846.80 = 90,511.20 : x
  2. Step 2: Convert to fraction form
    343,231.20/514,846.80 = 90,511.20/x
  3. Step 3: Cross multiply
    343,231.20x = 514,846.80 × 90,511.20
  4. Step 4: Simplify right side
    343,231.20x = 46,599,401,684.16
  5. Step 5: Solve for x
    x = 46,599,401,684.16/343,231.20
  6. Step 6: Final answer
    x = 135,766.80

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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.