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Finding the Fourth Proportional to 517,482, 776,223 and 143,505

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Solution

The fourth proportional to 517,482, 776,223 and 143,505 is: 215,257.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,482 : 776,223 = 143,505 : x
  2. Step 2: Convert to fraction form
    517,482/776,223 = 143,505/x
  3. Step 3: Cross multiply
    517,482x = 776,223 × 143,505
  4. Step 4: Simplify right side
    517,482x = 111,391,881,615
  5. Step 5: Solve for x
    x = 111,391,881,615/517,482
  6. Step 6: Final answer
    x = 215,257.50

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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.