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Finding the Fourth Proportional to 543,624.32, 815,113.43 and 206,689.63

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Solution

The fourth proportional to 543,624.32, 815,113.43 and 206,689.63 is: 309,911.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,624.32 : 815,113.43 = 206,689.63 : x
  2. Step 2: Convert to fraction form
    543,624.32/815,113.43 = 206,689.63/x
  3. Step 3: Cross multiply
    543,624.32x = 815,113.43 × 206,689.63
  4. Step 4: Simplify right side
    543,624.32x = 168,475,493,649.55
  5. Step 5: Solve for x
    x = 168,475,493,649.55/543,624.32
  6. Step 6: Final answer
    x = 309,911.62

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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.