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Finding the Fourth Proportional to 307,572.80, 461,474.40 and 120,718.40

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Solution

The fourth proportional to 307,572.80, 461,474.40 and 120,718.40 is: 181,122.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,572.80 : 461,474.40 = 120,718.40 : x
  2. Step 2: Convert to fraction form
    307,572.80/461,474.40 = 120,718.40/x
  3. Step 3: Cross multiply
    307,572.80x = 461,474.40 × 120,718.40
  4. Step 4: Simplify right side
    307,572.80x = 55,708,451,208.96
  5. Step 5: Solve for x
    x = 55,708,451,208.96/307,572.80
  6. Step 6: Final answer
    x = 181,122.81

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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.