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Finding the Fourth Proportional to 465,817.40, 699,251.70 and 308,353.40

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Solution

The fourth proportional to 465,817.40, 699,251.70 and 308,353.40 is: 462,878.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,817.40 : 699,251.70 = 308,353.40 : x
  2. Step 2: Convert to fraction form
    465,817.40/699,251.70 = 308,353.40/x
  3. Step 3: Cross multiply
    465,817.40x = 699,251.70 × 308,353.40
  4. Step 4: Simplify right side
    465,817.40x = 215,616,639,150.78
  5. Step 5: Solve for x
    x = 215,616,639,150.78/465,817.40
  6. Step 6: Final answer
    x = 462,878.03

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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.