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Finding the Fourth Proportional to 253,905.50, 350,401.02 and 145,019.30

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Solution

The fourth proportional to 253,905.50, 350,401.02 and 145,019.30 is: 200,133.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,905.50 : 350,401.02 = 145,019.30 : x
  2. Step 2: Convert to fraction form
    253,905.50/350,401.02 = 145,019.30/x
  3. Step 3: Cross multiply
    253,905.50x = 350,401.02 × 145,019.30
  4. Step 4: Simplify right side
    253,905.50x = 50,814,910,639.69
  5. Step 5: Solve for x
    x = 50,814,910,639.69/253,905.50
  6. Step 6: Final answer
    x = 200,133.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.