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Finding the Fourth Proportional to 210,231.80, 315,347.70 and 193,028.60

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Solution

The fourth proportional to 210,231.80, 315,347.70 and 193,028.60 is: 289,542.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,231.80 : 315,347.70 = 193,028.60 : x
  2. Step 2: Convert to fraction form
    210,231.80/315,347.70 = 193,028.60/x
  3. Step 3: Cross multiply
    210,231.80x = 315,347.70 × 193,028.60
  4. Step 4: Simplify right side
    210,231.80x = 60,871,125,044.22
  5. Step 5: Solve for x
    x = 60,871,125,044.22/210,231.80
  6. Step 6: Final answer
    x = 289,542.90

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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.