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Finding the Fourth Proportional to 339,995.10, 510,118.20 and 140,332.80

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Solution

The fourth proportional to 339,995.10, 510,118.20 and 140,332.80 is: 210,551.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,995.10 : 510,118.20 = 140,332.80 : x
  2. Step 2: Convert to fraction form
    339,995.10/510,118.20 = 140,332.80/x
  3. Step 3: Cross multiply
    339,995.10x = 510,118.20 × 140,332.80
  4. Step 4: Simplify right side
    339,995.10x = 71,586,315,336.96
  5. Step 5: Solve for x
    x = 71,586,315,336.96/339,995.10
  6. Step 6: Final answer
    x = 210,551.02

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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.