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Finding the Fourth Proportional to 229,139.40, 343,709.10 and 199,614.90

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Solution

The fourth proportional to 229,139.40, 343,709.10 and 199,614.90 is: 299,422.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,139.40 : 343,709.10 = 199,614.90 : x
  2. Step 2: Convert to fraction form
    229,139.40/343,709.10 = 199,614.90/x
  3. Step 3: Cross multiply
    229,139.40x = 343,709.10 × 199,614.90
  4. Step 4: Simplify right side
    229,139.40x = 68,609,457,625.59
  5. Step 5: Solve for x
    x = 68,609,457,625.59/229,139.40
  6. Step 6: Final answer
    x = 299,422.35

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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.