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Finding the Fourth Proportional to 510,584.20, 765,905.10 and 155,609.80

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Solution

The fourth proportional to 510,584.20, 765,905.10 and 155,609.80 is: 233,423.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,584.20 : 765,905.10 = 155,609.80 : x
  2. Step 2: Convert to fraction form
    510,584.20/765,905.10 = 155,609.80/x
  3. Step 3: Cross multiply
    510,584.20x = 765,905.10 × 155,609.80
  4. Step 4: Simplify right side
    510,584.20x = 119,182,339,429.98
  5. Step 5: Solve for x
    x = 119,182,339,429.98/510,584.20
  6. Step 6: Final answer
    x = 233,423.48

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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.