Home / 286,825.80-430,433.10-186,742.20

Finding the Fourth Proportional to 286,825.80, 430,433.10 and 186,742.20

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Solution

The fourth proportional to 286,825.80, 430,433.10 and 186,742.20 is: 280,239.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,825.80 : 430,433.10 = 186,742.20 : x
  2. Step 2: Convert to fraction form
    286,825.80/430,433.10 = 186,742.20/x
  3. Step 3: Cross multiply
    286,825.80x = 430,433.10 × 186,742.20
  4. Step 4: Simplify right side
    286,825.80x = 80,380,024,046.82
  5. Step 5: Solve for x
    x = 80,380,024,046.82/286,825.80
  6. Step 6: Final answer
    x = 280,239.87

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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.