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Finding the Fourth Proportional to 288,570.70, 432,856.05 and 189,037.90

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Solution

The fourth proportional to 288,570.70, 432,856.05 and 189,037.90 is: 283,556.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,570.70 : 432,856.05 = 189,037.90 : x
  2. Step 2: Convert to fraction form
    288,570.70/432,856.05 = 189,037.90/x
  3. Step 3: Cross multiply
    288,570.70x = 432,856.05 × 189,037.90
  4. Step 4: Simplify right side
    288,570.70x = 81,826,198,694.30
  5. Step 5: Solve for x
    x = 81,826,198,694.30/288,570.70
  6. Step 6: Final answer
    x = 283,556.85

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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.