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Finding the Fourth Proportional to 321,205, 481,837.20 and 84,548.92

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Solution

The fourth proportional to 321,205, 481,837.20 and 84,548.92 is: 126,831.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,205 : 481,837.20 = 84,548.92 : x
  2. Step 2: Convert to fraction form
    321,205/481,837.20 = 84,548.92/x
  3. Step 3: Cross multiply
    321,205x = 481,837.20 × 84,548.92
  4. Step 4: Simplify right side
    321,205x = 40,738,814,875.82
  5. Step 5: Solve for x
    x = 40,738,814,875.82/321,205
  6. Step 6: Final answer
    x = 126,831.20

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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.