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Finding the Fourth Proportional to 515,616, 773,461.24 and 215,794.88

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Solution

The fourth proportional to 515,616, 773,461.24 and 215,794.88 is: 323,707.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,616 : 773,461.24 = 215,794.88 : x
  2. Step 2: Convert to fraction form
    515,616/773,461.24 = 215,794.88/x
  3. Step 3: Cross multiply
    515,616x = 773,461.24 × 215,794.88
  4. Step 4: Simplify right side
    515,616x = 166,908,975,470.45
  5. Step 5: Solve for x
    x = 166,908,975,470.45/515,616
  6. Step 6: Final answer
    x = 323,707.91

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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.