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Finding the Fourth Proportional to 510,721.20, 766,081.80 and 173,850.30

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Solution

The fourth proportional to 510,721.20, 766,081.80 and 173,850.30 is: 260,775.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,721.20 : 766,081.80 = 173,850.30 : x
  2. Step 2: Convert to fraction form
    510,721.20/766,081.80 = 173,850.30/x
  3. Step 3: Cross multiply
    510,721.20x = 766,081.80 × 173,850.30
  4. Step 4: Simplify right side
    510,721.20x = 133,183,550,754.54
  5. Step 5: Solve for x
    x = 133,183,550,754.54/510,721.20
  6. Step 6: Final answer
    x = 260,775.45

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Double scale
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Similar ratio
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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.