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Finding the Fourth Proportional to 517,254.85, 775,882.28 and 143,277.85

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Solution

The fourth proportional to 517,254.85, 775,882.28 and 143,277.85 is: 214,916.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,254.85 : 775,882.28 = 143,277.85 : x
  2. Step 2: Convert to fraction form
    517,254.85/775,882.28 = 143,277.85/x
  3. Step 3: Cross multiply
    517,254.85x = 775,882.28 × 143,277.85
  4. Step 4: Simplify right side
    517,254.85x = 111,166,744,215.11
  5. Step 5: Solve for x
    x = 111,166,744,215.11/517,254.85
  6. Step 6: Final answer
    x = 214,916.78

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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.