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Finding the Fourth Proportional to 199,615.40, 299,423.10 and 143,846.90

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Solution

The fourth proportional to 199,615.40, 299,423.10 and 143,846.90 is: 215,770.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,615.40 : 299,423.10 = 143,846.90 : x
  2. Step 2: Convert to fraction form
    199,615.40/299,423.10 = 143,846.90/x
  3. Step 3: Cross multiply
    199,615.40x = 299,423.10 × 143,846.90
  4. Step 4: Simplify right side
    199,615.40x = 43,071,084,723.39
  5. Step 5: Solve for x
    x = 43,071,084,723.39/199,615.40
  6. Step 6: Final answer
    x = 215,770.35

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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.