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Finding the Fourth Proportional to 286,860.32, 430,217.40 and 203,404.40

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Solution

The fourth proportional to 286,860.32, 430,217.40 and 203,404.40 is: 305,054.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,860.32 : 430,217.40 = 203,404.40 : x
  2. Step 2: Convert to fraction form
    286,860.32/430,217.40 = 203,404.40/x
  3. Step 3: Cross multiply
    286,860.32x = 430,217.40 × 203,404.40
  4. Step 4: Simplify right side
    286,860.32x = 87,508,112,116.56
  5. Step 5: Solve for x
    x = 87,508,112,116.56/286,860.32
  6. Step 6: Final answer
    x = 305,054.78

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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.