Home / 286,769.68-430,067.10-76,380.28

Finding the Fourth Proportional to 286,769.68, 430,067.10 and 76,380.28

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Solution

The fourth proportional to 286,769.68, 430,067.10 and 76,380.28 is: 114,547.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,769.68 : 430,067.10 = 76,380.28 : x
  2. Step 2: Convert to fraction form
    286,769.68/430,067.10 = 76,380.28/x
  3. Step 3: Cross multiply
    286,769.68x = 430,067.10 × 76,380.28
  4. Step 4: Simplify right side
    286,769.68x = 32,848,645,516.79
  5. Step 5: Solve for x
    x = 32,848,645,516.79/286,769.68
  6. Step 6: Final answer
    x = 114,547.14

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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.