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Finding the Fourth Proportional to 340,543.20, 510,037.20 and 200,575.20

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Solution

The fourth proportional to 340,543.20, 510,037.20 and 200,575.20 is: 300,404.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,543.20 : 510,037.20 = 200,575.20 : x
  2. Step 2: Convert to fraction form
    340,543.20/510,037.20 = 200,575.20/x
  3. Step 3: Cross multiply
    340,543.20x = 510,037.20 × 200,575.20
  4. Step 4: Simplify right side
    340,543.20x = 102,300,813,397.44
  5. Step 5: Solve for x
    x = 102,300,813,397.44/340,543.20
  6. Step 6: Final answer
    x = 300,404.80

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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.