Home / 386,870.37-580,271.15-134,145.20

Finding the Fourth Proportional to 386,870.37, 580,271.15 and 134,145.20

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Solution

The fourth proportional to 386,870.37, 580,271.15 and 134,145.20 is: 201,205.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,870.37 : 580,271.15 = 134,145.20 : x
  2. Step 2: Convert to fraction form
    386,870.37/580,271.15 = 134,145.20/x
  3. Step 3: Cross multiply
    386,870.37x = 580,271.15 × 134,145.20
  4. Step 4: Simplify right side
    386,870.37x = 77,840,589,470.98
  5. Step 5: Solve for x
    x = 77,840,589,470.98/386,870.37
  6. Step 6: Final answer
    x = 201,205.87

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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.