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Finding the Fourth Proportional to 515,908.20, 773,919.90 and 160,919.40

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Solution

The fourth proportional to 515,908.20, 773,919.90 and 160,919.40 is: 241,397.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,908.20 : 773,919.90 = 160,919.40 : x
  2. Step 2: Convert to fraction form
    515,908.20/773,919.90 = 160,919.40/x
  3. Step 3: Cross multiply
    515,908.20x = 773,919.90 × 160,919.40
  4. Step 4: Simplify right side
    515,908.20x = 124,538,725,956.06
  5. Step 5: Solve for x
    x = 124,538,725,956.06/515,908.20
  6. Step 6: Final answer
    x = 241,397.07

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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.